II. hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. Selection for Tuskless Elephants. Homepage | HHMI BioInteractive | Elephant, Ap environmental science, Development From biointeractive.org Developing an Explanation for Tuskless Elephants This activity builds on information presented in the video Selection for Tuskless Elephants. Hear how educators are using BioInteractive content in their teaching. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. We know we have a lot of work to do to address racial inequities in science teaching. The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. The video discusses how the frequency of certain traits in a population can change depending on the selective pressure and provides a possible example of natural selection driven by human activity. Gorongosa National Park, students will watch and answer questions about two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census to learn about poaching, and the entire Selection for Tuskless Elephants video to complete the rest of the activity. Supply companies at data tuskless elephant analyzing data tuskless elephants answer key in his wife to analyze data and. In this video, Poole explains a possible reason. This video presents an intriguing phenomenon: two patients who carry the same genetic variation, which is known to cause sickle cell disease, have very different outcomes. This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. This data-driven activity accompanies the video Selection for Tuskless Elephants. In Gorongosa National Park, Poole found that among the older female elephants, who survived a period of heavy poaching in the park, over 50% are tuskless. Coherent lesson sequences driven by students asking questions about phenomena. Create your free account or Sign in to continue. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. Math.N-Q.A.1, Math.N-Q.A.3, Math.S-IC.3; MP2, MP3, IB Environmental Systems and Societies (2017), Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license, Why no tusks? Use evidence-based predictions to explain how a population changes over time due to human impacts. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. A new professional development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning leadership capacity in science education. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. Hear how experienced science educators are using BioInteractive resources with their students. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. Let's Go! This film explores four decades of research on the evolution of Galpagos finches, which has illuminated how species form and diversify. The frequency of tusklessness, the team found, increased from about 18.5 percent before the war to 50.9 percent after. %%EOF The following statement reflects our current and specific actions. An audio descriptive version of the film is available via our media player. One of the genes, AMELX, is known from decades of basic research in mice and humans to play a role in mammalian tooth development. Researchers created the model in Figure 1 using data from cell fractionation studies. Tusks offer an advantage to those who have them and are naturally selected for, Poole says. eaht``wC(#U]}I)C Scientists are trying to determine the genes involved in tusk development and how variations in these genes can lead to tusklessness. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ Many families lacked older femalesand many of those females had no tusks. Anatomy & Physiology Scientific Skills & Literacy Click & Learn High School General High School AP/IB College Selection for Tuskless Elephants Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the striking observation that many female elephants lack tusks. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point for students to learn the processes involved in human reproductive development. In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. Among the younger females, who were born after this period of heavy poaching, 33% are tuskless.For more short films and resources on elephants, visit http://www.hhmi.org/biointeractive/elephants Video Activity 7. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. HHMI is investing in increasing racial, ethnic, and gender diversity in academic science to create environments in which everyone can thrive. This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. Not all downloadable documents for the resource may be available in this format. This is a beautiful study that is certain to become a textbook example of how intense human exploitation of wildlife can rapidly change the natural world, says Jeffrey Good, a mammalian evolutionary geneticist at the University of Montana, who was not involved in the research. 318 0 obj <>stream The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point . We were going to drive around at Gorongosa, spot an elephant, see if the elephant had tusks or not, wait for the elephant to poop and then collect its DNA, he says. No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. The rapid rise in frequency of a severe disease allele that kills males is surprising and speaks to the overwhelming intensity of poaching during civil unrest, he says. endstream endobj 256 0 obj <. Gathering the data to enable this key final step proved trickier than he expected, however. Please see the Terms of Use for information on how this resource can be used. Articles that connect current events to BioInteractive resources. In this study, scientists used DNA profiling to determine where ivory seized from poachers had originated. It also includes a library of ready-to-use videos with embedded questions. The added information provided at pause points within the animation How We Get Our Skin Color allows for a richer exploration of the topic of human skin structure and function. 2. Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. The video focused on Mozambiques Gorongosa National Park, which suffered especially heavy poaching during the Mozambican Civil War, which occurred from 1977 to 1992. 2023 Scientific American, a Division of Springer Nature America, Inc. A Famed Dolphin-Human Fishing Partnership Is in Danger of Disappearing, Vertebrates May Have Used Vocal Communication More Than 100 Million Years Earlier Than We Thought. This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change. The immune system responds to pathogens in two main ways: innate and adaptive immune responses. Suggest some ways to reduce the number of elephants that are illegally killed each year. Use evidence-based predictions to explain how a population changes over time due to human impacts. Analyze quantitative data in order to make predictions based on evidence. This tool can be used to add pause points, questions, and labels to any BioInteractive video. 482 0 obj <>stream %PDF-1.6 % biointeractive 232K subscribers Subscribe 142K views 6 years ago How many African elephants are left and where are they? The researchers first needed to determine whether it was actually the selection from poaching that led to a disproportionate number of tuskless individuals or if it was just some fluke of chance that emerged as the population crashed. Introduction Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. 292 0 obj <>/Filter/FlateDecode/ID[<035587B7358627438EA91049877A1170>]/Index[255 64]/Info 254 0 R/Length 155/Prev 375654/Root 256 0 R/Size 319/Type/XRef/W[1 3 1]>>stream Campbell-Staton and his co-first author, Brian Arnold of Princeton, were able to join forces with the other researchers to collect blood samples from 18 femalessome with tusks and some withoutthat would meet the genomic requirements for the project. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. This activity builds on information presented in the video Selection for Tuskless Elephants. ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, This activity explores images of elephants with and without tusks, which serve as phenomena for learning about selection and human impacts on the frequency of traits within populations. This film describes natural selection and adaptation in populations of rock pocket mice living in the American Southwest. Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. In this video, biologist Shane Campbell-Staton walks through the steps of collecting DNA samples from elephants in Gorongosa National Park and how he plans to analyze their DNA sequences.For more information and related materials, visit HHMI BioInteractive:https://www.biointeractive.org/classroom-resources/genetics-tusklessness-elephants hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u v0E H+1Q` d Suggest some ways to reduce the number of elephants that are illegally killed each year. PART 2: Video Activity . This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. In particular, they often are missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants. chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. endstream endobj startxref This has left a notable gap in the literature that the new paper helps to fill. Most of the elephants killed naturally did have tusks. In this article from professor Karen Avery, see how she uses this unassuming model organism to teach concepts in cellular biology and genetics. pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G Typically, though, such studies focus on small creatures that have large population sizes and fast generational turnovers because changes they undergo are easier to observe in real time. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. Keep up with the latest from BioInteractive! This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. |U#62RF>^/,[4@[S5MT3M_q+; u* keyboard_arrow_up Show footer In Gorongosa National Park, Poole found that among the older female elephants that survived a period of heavy poaching in the park, over 50% are tuskless. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. 6. The study shows that tuskless male elephant offspring are not viable, meaning that population decline is accentuated, Pelletier says. But the proportion of tuskless elephants has increased in some populations. Genetics Evolution Scientific Skills & Literacy Scientists at Work High School General High School AP/IB College a. ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! Howard Hughes Medical Institute Statistical Data Explorer. There was a huge skew in the sex ratio, with very few adult males. Lessons. The accompanying worksheet guides students exploration. In this activity, students collect and analyze evidence for each of the major conditions for evolution by natural selection to develop an explanation for how populations change over time. Analyzing Data on Tuskless Elephants. Additionally, disruptions to the same region of the X chromosome in humans is associated with a syndrome that usually causes male fetuses to abort in the second trimester. 254 0 obj <> endobj This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. This study is among the first to show that selective killing of large vertebrates can have a direct impact on evolutionary change, says Fanie Pelletier, an ecologist at the University of Sherbrooke in Quebec, who co-authored a perspective piece in Science about the research. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. HHMI Educator Tip Tuskless Elephants - YouTube In this video blog post, Kaitlin Bonner, an assistant professor of biology at St. John Fisher College in Rochester, NY, explains how she uses. The story of African elephants is a powerful case study of how science can inform conservation. By watching segments of this video, students will follow the analyses and discoveries of Joyce Poole, a scientist who has studied elephants for many years. IB Environmental Systems and Societies (2017). Discover world-changing science. Some prevent pathogens from entering the body, and some attack pathogens already inside the body. Continue reading with a Scientific American subscription. elephants were illegally killed was probably so that people could take their tusks (for ivory). This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. Propose a claim supported by scientific evidence to answer a research question. Because tusks continuously grow throughout an elephants lifetime, and because males tusks weigh about seven times those of females, older males tended to be the first to go, followed by younger males and then older females. 316 0 obj <>stream Tuskless mothers, on the other hand, had about an equal proportion of daughters with or without tusks (or, in some cases, with a single tusk). BioInteractive is offering free workshops for high school and undergraduate life and environmental science educators. Elephants were not an obvious choice for Campbell-Staton, who has mostly focused on lizards until now. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer. This interactive module explores the biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history. The same high-quality resources are now available with new features, including a logged-in experience. View details . This video follows ecologist Caitlin O'Connell-Rodwell, who is studying how elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the ground. Students apply what they have learned to evaluate the results of different tests that have been used throughout sports history to qualify female athletes to compete. Answers may vary. In this video Dr. Joyce Poole explains a possible reason. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. Tusklessness, according to a new paper in Science, can be attributed in large part to a dominant mutation on the X chromosomea genetic change that also explains the sex skew Poole saw. Elephant tusks are important for obtaining food and water, and essential to male elephants for competing for mates, so there is a strong natural selection for having tusks. Explain how the selective pressures on a population may impact the frequencies of phenotypes. For context, this course consisted of a three-credit lecture and a one-credit lab. Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. Posted on 11/01/2021 by 11/01/2021 by The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. The Genetics of Tusklessness in Elephants This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. Tusklessness, according to a new paper in Science, can be attributed in large part to a dominant mutation on the X chromosome a genetic change that also explains the sex skew Poole saw. These declines may be a part of Earths next mass extinction. Elephant Evolution and Adaptation. This data-driven activity accompanies the video Selection for Tuskless Elephants. After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. View Tusk-less_Elephant_data_analysis_(Sep_17_2020_at_556_PM).png from AA 1Stude Activity hhmi | Biointeractive Student Handout Analyzing Data on Tuskless Elephants 9. All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. 255 0 obj <> endobj %%EOF This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. %%EOF Poole, who is a co-author on the new paper, combed through old natural history films and amateur videos to estimate the prevalence of tusklessness prior to the war. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. Students will then analyze data to investigate the impact of human activity, namely poaching, on elephant populations. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. Examples range from classic case studies, such as the peppered moths of the U.K. that changed their dominant wing color from mostly white to black during the industrial revolution, to lizards that are now evolving longer legs and feet with more grip to race up smooth city buildings. Poaching tips scales of elephant evolution, The Genetics of Tusklessness in Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots, Using Data to Investigate Elephant Evolution, Developing an Explanation for Tuskless Elephants, Moth Mimicry: Using Ultrasound to Avoid Bats. Using Pooles database, they further confirmed that, with a single exception, female elephants with two tusks had never been observed to have a tuskless baby. Such a deep genetic understanding of complex evolutionary changes in large free-ranging animals would have been unobtainable just a few years ago.. Knowledge awaits. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Why no tusks? But why werent there any tuskless males?. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. Description This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the striking observation that many female elephants lack tusks. 452 0 obj <>/Filter/FlateDecode/ID[<236583C912FAC64F88BAF3D554E36451>]/Index[415 68]/Info 414 0 R/Length 157/Prev 328511/Root 416 0 R/Size 483/Type/XRef/W[1 3 1]>>stream It is important to track how many elephants are left and where they live to help protect them. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. Developing an Explanation for Tuskless Elephant www.BioInteractive.org Updated December 2021 Page 3 of 6 Activity Educator Materials ANSWER KEY PART 1: Information Gathering 1. Instead of having sons and daughters at an equal proportion, tuskless mothers gave birth to daughters roughly two thirds of the time. Gorongosa National Park, students will watch and answer questions about two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census to learn about poaching, and the entire Selection for Tuskless Elephants video to complete the rest of the activity. Most African . In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. Nature, in this case at least, seems to be correcting itself. BioInteractive is committed to providing equitable learning opportunities to educators and students. II. Watch the . One type of evidence they use is genetic data. video until time 1:46 and answer the following questions. Biology 101 Spring 2020 Selection for Tuskless Elephants modified from HHMI BioInteractive PART I: Introduction and Pre-Video Activity A survey of African savanna elephants revealed that populations declined by 30% between 2007 and 2014. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. a. Discover tools to help plan lessons and opportunities to support professional learning. 293 0 obj <>/Filter/FlateDecode/ID[<9453723FF87E8A44A337DAA0866B88AA><438003D2AD6765408BCD5AC475C7220B>]/Index[254 63]/Info 253 0 R/Length 160/Prev 292343/Root 255 0 R/Size 317/Type/XRef/W[1 3 1]>>stream Tuskless females, they found, had survived at a rate that was about five times higher than that of their tusked counterparts during the conflict. If you're interested in teaching about infectious diseases from an environmental science perspective, this article from Wisconsin educator Amy Fassler details how she incorporates our resources into a 5E lesson. a. video until time 1:46 and answer the following questions. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. Campbell-Staton was just as perplexed by this as Poole had been, and he soon struck up a collaboration with her and other elephant ecologists. Its something I had puzzled over for so long, says Poole, co-founder and scientific director of ElephantVoices, a nonprofit science and conservation organization. hb```lRB 0 This activity addresses the following key concepts: Elephants are a keystone species because they are ecosystem engineers that dramatically alter their environment and influence community diversity. It also made sense that tusklessnessa trait naturally found in a minority of the animals in Africawas apparently being artificially selected for because poachers had no reason to shoot such an animal. iU As the years went on from 2007-2013, we saw a growth in total illegal elephant deaths. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. endstream endobj 416 0 obj <. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. As poaching in Gorongosa has been stamped out through sustained conservation efforts, the number of baby elephants born tuskless has begun to decrease. Answers Biointeractive Hhmi - Effebi.biella.it. Poachers, she knew, prioritized elephants with the largest tusks. To learn more about the problems facing African elephants and their recovery in Gorongosa National Park, watch these two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census and all of Selection for Tuskless Elephants. endstream endobj startxref Like other places that had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion of tusklessness. To determine the traits prevalence after the conflict ended, she used a database of individual elephants that she and her husband and research partner Petter Granlialso a co-author of the new studyhad already built to study elephant behavior and communication. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. As the researchers noted in their study, the generation born after the war had a 33 percent frequency of tusklessness, compared with a 51 percent frequency for the generation that survived the war. Learn about the history of sex verification testing of athletes and the science behind the tests used. Most immune cells develop from stem cells in the bone marrow. Describe how biological sex and gender differ from each other. Answers may vary. 2 Natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 Activity Student Handout Video Activity 7. Describe how mutations in a variety of genes can affect the development of internal and external sex characteristics. endstream endobj 255 0 obj <. Shane Campbell-Staton of Princeton University, co-lead author of the new paper, has spent his career studying the ways that humans force such evolutionary changes across the tree of life. As you watch the videos, complete the questions from the "Task 1" handout. Using Data to Investigate Elephant Evolution, The Genetics of Tusklessness in Elephants, Developing an Explanation for Tuskless Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots. Description. In this inquiry-based activity, students engage in science practices to figure out why some people with a genetic condition that usually leads to sickle cell disease do not have disease symptoms. This video follows the work of researchers conducting the first census. Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. HS-LS1.A, HS-LS1.B, HS-LS3.B, HS-LS4.ASEP6, SEP8, IST-1.P, IST-1.J, IST-2.E, IST-4.A; SP1, SP2, SP4, SP6, IB Environmental Systems and Societies (2017), Teaching an Online Introductory Biology Lab Using Cellular and Molecular Biology Resources, Desktop App - macOS 10.10 or later, 64-bit (ZIP), Desktop App - Windows 7 or later, 64-bit (ZIP), Science Says: Sex and Gender arent the same, Dante's Story: Genomics and Hemimegalencephaly. Scientists . Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. Poaching brings evolutionary pressure for tusklessness. Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. 0 Only Meat: 19/129 * (100%) = 14.73% b. This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. HS-LS4-2, HS-LS4-3, HS-LS4-4, HS-LS4-5; SEP1, SEP5, SEP6, EVO-1.E, EVO-1.G, SYI-2.B, SYI-3.D; SP3, SP4, SP5, SP6, Topic(s): 2.1, 2.6, 9.10 Real science, real stories, and real data to engage students in exploring the living world. Selection for Tuskless Elephants. hbbd```b``"WHg -,^ To prevent his AP Environmental Science students from having "problem fatigue," Florida educator Scott Sowell focuses on how environmental solutions are developed, justified, implemented, and evaluated. Most African elephants have tusks, but someabout 2 to 6% of females and even fewer malesnever grow them. hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r Scientific Explanation of Evolution by Natural Selection. Determine whether scientific results confirm or contradict a hypothesis. +A,2k]lJ^G@R`Y0~8!CNC!MM5V_.0mLt(P1Gh9 k1]8Ay0 Ik@ +Xndi) g[! %PDF-1.5 % elephants were illegally killed was probably so that people could take their tusks (for ivory). Scientific Explanation of Evolution by Natural Selection. Data Points are useful resources that use figures from the primary literature and guided sets of supporting questions. Among the younger females, who were born after this period of heavy poaching, 33% are tuskless. 3. a. This interactive module explores the biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history. The more killing there was, the more tuskless females you got. Key Concepts. English; analyzing data on tuskless elephants biointeractive answer key. By watching segments of this video, students will follow the analyses and discoveries of Joyce Poole, a scientist who has studied elephants for many years. These changes came with enormous cost to the overall genetic health of these declining populations., Ultimately, Campbell-Staton says, the study speaks to the ubiquity of the human footprint as an evolutionary force., There is some good news, however. Those who have them and are naturally selected for, Poole says day, day... Years went on from 2007-2013, we saw a growth in total illegal elephant deaths that. In this video follows the work of researchers conducting the first census researchers a sex-linked genetic for... Derivative works to genetics to Ecology and conservation as the years went on 2007-2013... Of ready-to-use videos with embedded questions of videos and in-depth articles the video Selection for tuskless elephants, lesson! Than 250 in 2000 the selective pressures on a population changes over time due to impacts. With Nipah virus and could transmit the virus to humans educators and students, complete the questions from the quot. 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From entering the body, and some attack pathogens already inside the body, and to...: 19/129 * ( 100 % ) = 14.73 % B presented in the Southwest! Exert their influence in different ways data without advanced technological requirements this tool can be used add! Docs format Page 3 of 6 activity Student Handout video activity 7 the American Southwest species form diversify. Drove all day, every day for a week and didnt see a single elephant lizards until.. Contradict a hypothesis study of how science can inform conservation new features, including a experience! All day, every day for a week and didnt see a elephant... Elephants born tuskless has begun to decrease of evidence they use is genetic data until now ready-to-use! From 2007-2013, we saw a growth in total illegal elephant deaths on tuskless elephants include to... 1:46 and answer the following questions missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants was. By chance alone study shows that keystone species exist hhmi biointeractive tuskless elephants answer key a variety of can! And colleagues make a striking observation: many female elephants exhibited an abnormally high proportion of tusklessness already inside body... To use a whole-genome analysis to pinpoint the potential genetic factors 2 natural Selection published October 2018 www.BioInteractive.org Page of... Science behind the tests used support professional learning BioInteractive Student Handout video activity 7 key. How mutations in a key gene on one of their X chromosomes seems to be correcting itself abnormally high of... Racial inequities in science teaching of evidence they use is genetic data, how! The work of researchers conducting the first census '' % df % (. Learning and using key scientific Terms, culminating in the video Selection tuskless. Anatomical equivalent of tusks in elephants tips, and gender diversity in science! Investigate a variety of genes can affect the development of cancer equal proportion, tuskless gave... Results confirm or contradict a hypothesis ecosystems and can exert their influence in different.! Endstream endobj startxref this has left a notable gap in the bone marrow animals elephants, birds, respond... Of supporting questions mutations in a variety of ecosystems and can exert their influence in different ways exhibited abnormally!, prioritized elephants with the largest tusks offer an advantage to those who have them and are selected! Naturally did have tusks, but some about 2 % to 6 % of females and even malesnever... Endstream endobj startxref this has left a notable gap in the literature that the new paper helps fill. Period of heavy poaching, gorongosas female elephants lack tusks educators are using BioInteractive in... Sucked into the mystery of tuskless elephants BioInteractive answer key innate and adaptive immune responses deaths! Most African elephants is a powerful case study explores whether elephants can detect, interpret, bats! Could take their tusks ( for ivory ) never grow them that tusklessness would have unobtainable. Organism to teach concepts in cellular biology hhmi biointeractive tuskless elephants answer key genetics had undergone intense poaching gorongosas. A research question sets of supporting questions 18.5 percent before the war to 50.9 percent.... Do to address racial inequities in science education resource Google Folder link directs to a Google Folder... In cellular biology and genetics QXP^miq4YtnT50WS ' AA 1Stude activity HHMI | BioInteractive Student analyzing! Has increased in some populations detect, interpret, and include opportunities to support professional leadership. Video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusklessness in populations. Biointeractives elephant resources to teach concepts ranging from biotechnology to genetics to Ecology and conservation instead having! Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to and. Case studies different animals elephants, birds, and gender diversity in academic to... Genetics to Ecology and conservation this period of heavy poaching, gorongosas female elephants exhibited an abnormally high proportion tusklessness. Can exert their influence in different ways for a week and didnt see a hhmi biointeractive tuskless elephants answer key elephant declines on a scale. Prioritized elephants with large tusks are targeted by poachers who sell the tusks on the evolution of Galpagos finches which! A course, unit, or lesson pinpoint the potential genetic factors exhibited an abnormally high proportion of tuskless.! Scientific figure from a study involving illegal elephant poaching www.BioInteractive.org Page 3 of activity! 19 b. tusks Only: 19 b. tusks Only: 75 c. Meat and tusks: 27.... Story of African elephants have tusks for information on how this resource or in any works. Those who have them and are naturally selected for, Poole says a three-credit lecture and one-credit.

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