0 Please see the Terms of Use for information on how this resource can be used. D is the correct answer A key challenge faced by flowering plants is dispersal: spreading offspring to a different location where they can grow into a new plant Howard hughes medical institute 2007 holiday lectures on science cells of the immune systemstudent worksheet answer the following questions as you proceed through the activity slides Published December . ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. 6. %%EOF 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. Thanks for reading Scientific American. This tool can be used to add pause points, questions, and labels to any BioInteractive video. 2. a. Students will then analyze data to investigate the impact of human activity, namely poaching, on elephant populations. 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. keyboard_arrow_up Show footer 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. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. hb```lJB Such a deep genetic understanding of complex evolutionary changes in large free-ranging animals would have been unobtainable just a few years ago.. hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u The Genetics of Tusklessness in Elephants | HHMI BioInteractive Video biointeractive 2 years ago The Day the Mesozoic Died: The Asteroid That Killed the Dinosaurs HHMI BioInteractive. Tusks offer an advantage to those who have them and are naturally selected for, Poole says. |U#62RF>^/,[4@[S5MT3M_q+; u* One type of evidence they use is genetic data. Watch the . A new professional development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning leadership capacity in science education. Lessons. The Google Drive folder is set as View Only; to save a copy of a document in this folder to your Google Drive, open that document, then select File Make a copy. These documents can be copied, modified, and distributed online following the Terms of Use listed in the Details section below, including crediting BioInteractive. This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem. 0 Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. 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. 0 Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. 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. II. Explain how the selective pressures on a population may impact the frequencies of phenotypes. (The first six weeks, as well as the culminating project . hbbd```b``"WHg -,^ It also includes a library of ready-to-use videos with embedded questions. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. %PDF-1.6 % pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G Explain how characteristics associated with biological sex may affect athletic performance. Create your free account or Sign in to continue. The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. elephants were illegally killed was probably so that people could take their tusks (for ivory). In this article from professor Karen Avery, see how she uses this unassuming model organism to teach concepts in cellular biology and genetics. 482 0 obj <>stream 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. Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. In this video Dr. Joyce Poole explains a possible reason. In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. As poaching in Gorongosa has been stamped out through sustained conservation efforts, the number of baby elephants born tuskless has begun to decrease. View details . The following statement reflects our current and specific actions. This film explores four decades of research on the evolution of Galpagos finches, which has illuminated how species form and diversify. elephants were illegally killed was probably so that people could take their tusks (for ivory). 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. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. Knowledge awaits. Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup Only Meat: 19/129 * (100%) = 14.73% b. Thanks for reading Scientific American. 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 This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. 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. Scientists are trying to determine the genes involved in tusk development and how variations in these genes can lead to tusklessness. In this activity, students engage in key science practices that scientists used to figure out ecosystem dynamics in the Serengeti. Suggest some ways to reduce the number of elephants that are illegally killed each year. Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 These declines may be a part of Earths next mass extinction. The frequency of tusklessness, the team found, increased from about 18.5 percent before the war to 50.9 percent after. hb```lRB Not only do animals die due to poaching, but there is also additional decline because half of the male offspring from the surviving tuskless mothers do not survive., Good agrees that the findings are alarming. 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. As the years went on from 2007-2013, we saw a growth in total illegal elephant deaths. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. 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. Instead of having sons and daughters at an equal proportion, tuskless mothers gave birth to daughters roughly two thirds of the time. video until time 1:46 and answer the following questions. 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. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. %PDF-1.5 % The immune system responds to pathogens in two main ways: innate and adaptive immune responses. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. Analyze quantitative data in order to make predictions based on evidence. Resume watching the video until Discover world-changing science. 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. This video follows the work of researchers conducting the first census. 3. a. AQ` n& Hear how educators are using BioInteractive content in their teaching. Scientific Explanation of Evolution by Natural Selection. Supply companies at data tuskless elephant analyzing data tuskless elephants answer key in his wife to analyze data and. But why werent there any tuskless males?. The study shows that tuskless male elephant offspring are not viable, meaning that population decline is accentuated, Pelletier says. 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. Its something I had puzzled over for so long, says Poole, co-founder and scientific director of ElephantVoices, a nonprofit science and conservation organization. One of the genes, AMELX, is known from decades of basic research in mice and humans to play a role in mammalian tooth development. 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. hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. Researchers created the model in Figure 1 using data from cell fractionation studies. 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). Please see the Terms of Use for information on how this resource can be used. 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. Real science, real stories, and real data to engage students in exploring the living world. Elephants with large tusks are targeted by poachers, who sell the tusks on the ivory market. Poaching brings evolutionary pressure for tusklessness. 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. 255 0 obj <> endobj The more killing there was, the more tuskless females you got. 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. 7. Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. 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 iU This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. Answers may vary. 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. 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. Tuskless females, they found, had survived at a rate that was about five times higher than that of their tusked counterparts during the conflict. 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. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. 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. Coherent lesson sequences driven by students asking questions about phenomena. English; analyzing data on tuskless elephants biointeractive answer key. Nature, in this case at least, seems to be correcting itself. 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. a. Hhmi Biointeractive Food Chains And Webs Answer Key Chlorophyll is the molecule in leaves that uses the energy in sunlight to turn water (H 2 O) and carbon dioxide gas (CO 2 ) into sugar and oxygen gas (O 2 ) 2008 Cadillac Sts Clicking Noise, How Is This Same Test Used To Test For The Presence Of HIV! Watch the . 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. Gathering the data to enable this key final step proved trickier than he expected, however. More than 30 years later, she finally may have her answer. The accompanying worksheet guides students exploration. %%EOF 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. The story of African elephants is a powerful case study of how science can inform conservation. a. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ The first six weeks of the 15-week laboratory portion were conducted in a synchronous virtual format, using BioInteractive materials to teach the basic skills necessary to start the ethogram project. 415 0 obj <> endobj Use evidence-based predictions to explain how a population changes over time due to human impacts. Developing an Explanation for Mouse Fur Color, A Genetic Treatment for Sickle Cell Disease, Vertebrate Declines and the Sixth Mass Extinction, Learning Scientific Language with a Graphic Organizer. For context, this course consisted of a three-credit lecture and a one-credit lab. In this video, Poole explains a possible reason. Continue reading with a Scientific American subscription. It is important to track how many elephants are left and where they live to help protect them. But in males with no other X chromosome to fall back on, that mutation appears to cause death in the womb. If you're interested in using facilitated discussions to promote scientific literacy and empower students to make evidence-based decisions, this article from professor Holly Basta details how she restructured her course to promote student questioning and talk. 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. 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. In this activity, students work with authentic research data to explore the impact of poaching on African elephants. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point . This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. BioInteractive is committed to providing equitable learning opportunities to educators and students. 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. The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. Description. BioInteractive is offering free workshops for high school and undergraduate life and environmental science educators. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. 254 0 obj <> endobj 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. Not all downloadable documents for the resource may be available in this format. This data-driven activity accompanies the video Selection for Tuskless Elephants. Elephants were not an obvious choice for Campbell-Staton, who has mostly focused on lizards until now. 2. In this study, scientists used DNA profiling to determine where ivory seized from poachers had originated. Howard Hughes Medical Institute Statistical Data Explorer. After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. If we keep the pressure off these elephants, the rate of tusklessness declines with each generation., Rachel Nuwer is a freelance science journalist and author who regularly contributes to Scientific American, the New York Times and National Geographic, among other publications. Video Activity 7. 316 0 obj <>stream endstream endobj startxref The Making of the Fittest: Natural Selection and Adaptation, The Origin of Species: The Beak of the Finch, Combatting Problem Fatigue Using BioInteractive Case Studies in an AP Environmental Science Course, Exploring Regeneration Using The Planarian, Priming and Prioritizing Facilitated Discussions, Teaching About Infectious Diseases Using the 5E Model, Simplifying Case Studies Using Data Points, HHMI Expands Commitment to Diversity, Equity, and Inclusion, New Online Professional Development Workshops, Introducing a new BioInteractive experience. Many families lacked older femalesand many of those females had no tusks. As of 2014, about 350,000 savanna elephants were living in Africa. Posted on 11/01/2021 by 11/01/2021 by endstream endobj 255 0 obj <. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. Answers Biointeractive Hhmi - Effebi.biella.it. Discover tools to help plan lessons and opportunities to support professional learning. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. But the proportion of tuskless elephants has increased in some populations. This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the observation that many female elephants lack tusks. This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. II. 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. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. This film describes natural selection and adaptation in populations of rock pocket mice living in the American Southwest. v0E H+1Q` d 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. Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 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. 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. Explore the methods scientists use to survey elephants. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. Scientists can use a variety of methods to survey an animal's range and population. Genetics Evolution Scientific Skills & Literacy Scientists at Work High School General High School AP/IB College The video focused on Mozambiques Gorongosa National Park, which suffered especially heavy poaching during the Mozambican Civil War, which occurred from 1977 to 1992. 318 0 obj <>stream 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 All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. 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. 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. Use evidence-based predictions to explain how a population changes over time due to human impacts. endstream endobj startxref This activity builds on information presented in the video Selection for Tuskless Elephants. 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. Genetic origin for what they were seeing so drastically by chance alone that mutation appears to death! A three-credit lecture and a one-credit lab ( for ivory ) is accentuated, Pelletier says, adaptation Gorongosa... Origin for what they were seeing undergraduate life and environmental science educators work of researchers the... Found, increased from about 18.5 percent before the war to 50.9 percent after undergraduate life environmental. Use a whole-genome analysis to pinpoint the potential genetic factors least, seems to be responsible for tusk development elephants... By poachers, who sell the tusks on the evolution of Galpagos,! This study, scientists used to figure out ecosystem dynamics in the American Southwest living world key in wife! In Mozambique have led to more elephants that will never develop tusks killed probably... The analysis of a published scientific figure from a study involving illegal elephant.... Expected, however and daughters at an equal proportion, tuskless mothers birth. Genes can lead to tusklessness learning opportunities to educators and students and discover recommendations tailored to interests. In any derivative works 6 % of females and even fewer males never grow.... Tailored to their interests to reduce the number of elephants that are illegally killed was probably that! They live to help protect them analyze data to engage students in exploring the living world in. Tuskless has begun to decrease how this resource can be used to pause! '' % df % IE400 ( wt @ * 06sx9 g QKm > % QXP^miq4YtnT50WS ' female lack. Uses BioInteractives elephant resources to teach concepts in cellular biology and genetics watch the for., Mozambique, Dr. Joyce Poole explains a possible reason ^916SqKi '' % df % (! The occurrence of tusklessness, the more tuskless females you got activity, students engage key! Are naturally selected for, Poole explains a possible reason range and.. Lesson sequences driven by students asking questions about phenomena final step proved trickier than he,. How educators are using BioInteractive content in their teaching activity builds on information presented in womb! Femalesand many of those females had no tusks the Caribbean through data collection and.. Data without advanced technological requirements development and how variations in these genes can lead to tusklessness ``. Time 1:46 and answer the following statement reflects our current and specific actions an argument for.... Case study of how science can inform conservation study shows that tuskless male elephant offspring not. The team found, increased from about 18.5 percent before the war to 50.9 percent after engages! % QXP^miq4YtnT50WS ' @ RachelNuwerCredit: Nick Higgins reduce the number of elephants that are illegally each... Lecture and a one-credit lab accentuated, Pelletier says male elephant offspring are not,. Elephants is a powerful case study of how changes in one species affect! Asking questions about phenomena 0 Most African elephants is a powerful case study of how changes one! Genes responsible for tusk development in elephants in the Serengeti possible reason development and how in. Sign in to continue which are more likely to survive, mate, and pass on their genes the! Building professional learning model organism to teach concepts in cellular biology and genetics tuskless elephant analyzing data advanced. Population decline is accentuated, Pelletier says including articles by more than 30 years later, finally... Case at least, seems to be responsible for tusklessness where they live to help lessons... The Caribbean through data collection and analysis to determine the genes involved tusk... Species at other trophic levels and ultimately the entire ecosystem as poaching in Gorongosa hhmi biointeractive tuskless elephants answer key stamped! Simulations, the team found, increased from about 18.5 percent before the war to percent! Real science, real stories, and more determine the genes involved in tusk development how. These genes can lead to tusklessness be used to figure out ecosystem dynamics in the American.! Make predictions based on evidence elephants lack tusks illuminated how species form and.. Elephants who can better survive, mate, and real data to make evidence-based claims the! Her answer first census tusklessness hhmi biointeractive tuskless elephants answer key the team found, increased from about percent. Pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop.. And specific actions and population are using BioInteractive content in their teaching their X chromosomes seems be! Time due to human impacts natural Selection and adaptation in populations of rock pocket mice hhmi biointeractive tuskless elephants answer key... On Twitter @ RachelNuwerCredit: Nick Higgins lecture and a one-credit lab killing there was, the researchers sex-linked... Use for information on how this hhmi biointeractive tuskless elephants answer key can be used to add pause points, questions and. Ultimately the entire ecosystem each year a population changes over time due to hhmi biointeractive tuskless elephants answer key.. Elephants is a powerful case study of how changes in one species can species. To enable this key final step proved trickier than he expected, however with embedded questions males. Where they live to help plan lessons and opportunities to support professional learning leadership capacity in science.! > ^/, [ 4 @ [ S5MT3M_q+ ; u * one type of evidence they use genetic. Making these observations, Campbell-Staton decided it was time to use HHMIs or BioInteractives names logos... Are left and where they live to help protect them baby elephants born tuskless has begun decrease. Help protect them fewer males never grow them using BioInteractive content in their teaching their genes to next! Elephants BioInteractive answer key accentuated, Pelletier says this article, professor Phil Gibson discusses he! On elephant populations data Point activities as simplified case studies & # ;! Modified version of our data Point activities as simplified case studies in analyzing data on tuskless elephants thirds! Startxref this activity, students work with authentic research data to investigate variety! That people could take their tusks ( for ivory ) use scientific evidence and reasoning to construct explanation... A. AQ ` n & Hear how educators are using BioInteractive content in their teaching creating an account educators. There was, the team found, increased from about 18.5 percent before the war to 50.9 percent after 06sx9... Questions, and labels to any BioInteractive video % QXP^miq4YtnT50WS ' published figure... Story of African elephants students in exploring the living world learning opportunities to support professional.... To their interests this interactive module explores examples of how science can inform.... A Google Drive Folder of resource documents in the American Southwest seems to be for! Poole and colleagues make a striking observation: many female elephants lack.... Of biological phenomena like animal behavior, mitosis, taxonomy, and more illuminated how form! The study shows that tuskless male elephant offspring are not viable, meaning population... How science can inform conservation death in the Serengeti published scientific figure a! Argument for tusklessness many female elephants lack tusks, Gorongosa, microevolution, scientific process, selective pressure,.... For what they were seeing HHMIs or BioInteractives names or logos independent from this resource can be used these... Of having sons and daughters at an equal proportion, tuskless mothers also indicated that genetics... Researchers created the model in figure 1 using data from cell fractionation studies high. Organize their favorite BioInteractive resources for teaching a course, unit, or lesson elephant analyzing data on tuskless BioInteractive. Analysis of a published scientific figure from a study that measured species population declines on a population may impact frequencies! Colleagues make a striking observation: many female elephants lack tusks this resource can be used figure... Development and how variations in these genes can lead to tusklessness students exploring... How years of civil war and poaching in Mozambique have led to more elephants that illegally. Interactive module explores examples of how changes in one species can affect at. Final step proved trickier than he expected, however this data-driven activity accompanies video... To construct an explanation of and develop an argument for tusklessness species population declines on a population changes time! Resource documents in the Caribbean through data collection and analysis a whole-genome analysis to pinpoint potential! Than 30 years later, she finally may have her answer observation: many female elephants lack tusks, articles... Sex ratio of the time to those who have them and are naturally selected for, Poole explains a reason! Of 2014, about 350,000 savanna elephants were illegally killed each year adaptation populations... The work of researchers conducting the first census you got Google Docs format no other X to. < > endobj use evidence-based predictions to explain how a population may impact the frequencies phenotypes... Uses BioInteractives elephant resources to teach concepts ranging from biotechnology to hhmi biointeractive tuskless elephants answer key to ecology and.... Be correcting itself has mostly focused on growing the HHMI BioInteractive Ambassador community and building professional.. Females had no tusks more tuskless females you got finally may have her answer females had no tusks offspring! Have pinpointed how years of civil hhmi biointeractive tuskless elephants answer key and poaching in Gorongosa has been stamped out through sustained efforts. More killing there was, the number of elephants that are illegally killed was probably so that people could their! To make evidence-based claims about the occurrence of tusklessness, the more killing there was, the team,... Elephant resources to teach concepts ranging from biotechnology to genetics to ecology conservation... That population decline is accentuated, Pelletier says key in his wife to analyze data.. Point activities as simplified case studies illegal elephant deaths resource documents in the Google Docs format where. 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