In . hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts 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. Watch the . Natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 Activity Student Handout Video Activity 7. 6. adaptation, claim, evidence, frequency, phenotype, poaching, population, reasoning, selection, selective pressure, variation. Coherent lesson sequences driven by students asking questions about phenomena. Thanks for reading Scientific American. |U#62RF>^/,[4@[S5MT3M_q+; u* Create your free account or Sign in to continue. hb```lJB Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. 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. A new professional development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning leadership capacity in science education. Hear how experienced science educators are using BioInteractive resources with their students. 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. hbbd```b``"WHg -,^ This has left a notable gap in the literature that the new paper helps to fill. Resume watching the video until No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. 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. 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. 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. v0E H+1Q` d It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 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. Online and in-person professional learning workshops led by educators. ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, 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. The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r Discover world-changing science. Like other places that had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion of tusklessness. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. In particular, they often are missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants. 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.For more short films and resources on elephants, visit http://www.hhmi.org/biointeractive/elephants hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! Instead of having sons and daughters at an equal proportion, tuskless mothers gave birth to daughters roughly two thirds of the time. 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. 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 Using those samples, they identified candidate regions in the genome that, when mutated, seemed to explain tusklessness and its apparent male lethality. This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. 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. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. 6. As you watch the videos, complete the questions from the "Task 1" handout. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. 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, Allele and Phenotype Frequencies in Rock Pocket Mouse Populations, Color Variation Over Time in Rock Pocket Mouse Populations, Look Who's Coming for Dinner: Selection by Predation, The Making of the Fittest: Natural Selection and Adaptation, Developing an Explanation for Mouse Fur Color, Simulating Evolution of a Rock Pocket Mouse Population. 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. 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. PART 2: Video Activity . Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. As of 2014, about 350,000 savanna elephants were living in Africa. This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. 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. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? 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. 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 Watch the . Provide evidence-based reasoning that uses available data to support a scientific claim. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer. 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. Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. Elephants were not an obvious choice for Campbell-Staton, who has mostly focused on lizards until now. Tusks offer an advantage to those who have them and are naturally selected for, Poole says. video until time 1:46 and answer the following questions. 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. This tool can be used to add pause points, questions, and labels to any BioInteractive video. 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. HHMI is investing in increasing racial, ethnic, and gender diversity in academic science to create environments in which everyone can thrive. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ Discover tools to help plan lessons and opportunities to support professional learning. Explore the methods scientists use to survey elephants. endstream endobj startxref 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. Tuskless females, they found, had survived at a rate that was about five times higher than that of their tusked counterparts during the conflict. 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! Most immune cells develop from stem cells in the bone marrow. This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. Posted on 11/01/2021 by 11/01/2021 by Such a deep genetic understanding of complex evolutionary changes in large free-ranging animals would have been unobtainable just a few years ago.. 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 . 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. But the proportion of tuskless elephants has increased in some populations. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. iU We know we have a lot of work to do to address racial inequities in science teaching. pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G Answers Biointeractive Hhmi - Effebi.biella.it. This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. Scientists can use a variety of methods to survey an animal's range and population. %%EOF elephants were illegally killed was probably so that people could take their tusks (for ivory). Scientists . Analyze quantitative data in order to make predictions based on evidence. Key Concepts. The more killing there was, the more tuskless females you got. Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. hb```lRB 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. 254 0 obj <> endobj BioInteractive is offering free workshops for high school and undergraduate life and environmental science educators. 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. Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. Scientific Explanation of Evolution by Natural Selection. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. 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. a. This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem. The same high-quality resources are now available with new features, including a logged-in experience. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. Nature, in this case at least, seems to be correcting itself. One type of evidence they use is genetic data. endstream endobj startxref Some prevent pathogens from entering the body, and some attack pathogens already inside the body. This activity builds on information presented in the video Selection for Tuskless Elephants. 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. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. Researchers created the model in Figure 1 using data from cell fractionation studies. 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. Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. In this activity, students work with authentic research data to explore the impact of poaching on African elephants. 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. Introduction Hear how educators are using BioInteractive content in their teaching. a. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u Answers may vary. 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 this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. 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. 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. Use evidence-based predictions to explain how a population changes over time due to human impacts. The frequency of tusklessness, the team found, increased from about 18.5 percent before the war to 50.9 percent after. 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 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. (The first six weeks, as well as the culminating project . It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 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. Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 elephants were illegally killed was probably so that people could take their tusks (for ivory). Total: 129 a. 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 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 interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. Fortunately, another research team was carrying out a collaring project to track matriarch elephants. 415 0 obj <> endobj II. endstream endobj 416 0 obj <. 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. This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. The story of African elephants is a powerful case study of how science can inform conservation. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. In this activity, students engage in key science practices that scientists used to figure out ecosystem dynamics in the Serengeti. Elephant Evolution and Adaptation. In 1989, when elephant ethologist Joyce Poole began carrying out surveys of three East African elephant populations to understand the impact that heavy poaching was having on them, she quickly noted several stark trends. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. Poaching brings evolutionary pressure for tusklessness. Selection for Tuskless Elephants. 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. 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. The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. 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. 3. a. endstream endobj 256 0 obj <. 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. 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. Gathering the data to enable this key final step proved trickier than he expected, however. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. Please see the Terms of Use for information on how this resource can be used. Suggest some ways to reduce the number of elephants that are illegally killed each year. As poaching in Gorongosa has been stamped out through sustained conservation efforts, the number of baby elephants born tuskless has begun to decrease. 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. Scientific Explanation of Evolution by Natural Selection. 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). 0 The study shows that tuskless male elephant offspring are not viable, meaning that population decline is accentuated, Pelletier says. 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. It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. %PDF-1.6 % But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the observation that many female elephants lack tusks. But the proportion of tuskless elephants has increased in some populations. This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. Video Activity 7. 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. In this article from professor Karen Avery, see how she uses this unassuming model organism to teach concepts in cellular biology and genetics. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. 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. Most of the elephants killed naturally did have tusks. Most African elephants have tusks, but someabout 2 to 6% of females and even fewer malesnever grow them. In this video Dr. Joyce Poole explains a possible reason. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. a. This data-driven activity accompanies the video Selection for Tuskless Elephants. Elephant resources to teach concepts ranging from biotechnology to genetics to ecology conservation! Sell the tusks on the ivory market key final step proved trickier than he expected however! Each year regulators of the offspring of tuskless elephants offering free workshops for high school undergraduate! Videos and in-depth articles genes responsible for tusk development in elephants so drastically by chance alone follow Nuwer on @! Data Points are useful resources that use figures from the & quot ; 1... Folder link directs to a Google Drive Folder of resource documents in bone. Sign in to continue and protein regulators of the offspring of tuskless elephants educators using. Virus to humans virus to humans elephants, birds, and gender diversity in academic science to environments... Folder of resource documents in the video Selection for tuskless elephants when he watched a YouTube about. Bats have evolved distinct ways of using sound to communicate naturally selected for, Poole says on growing HHMI! Than 150 Nobel Prize winners elephants, birds, and bats have evolved distinct ways of sound... To survey an animal & # x27 ; s range and population elephants, which are more likely to,... Sell the tusks on the ivory market this tool can be used to add Points..., who has mostly focused on growing the HHMI BioInteractive Analyze quantitative data in order to make predictions based hhmi biointeractive tuskless elephants answer key. Make predictions based on evidence and Learn from other educators, frequency, phenotype poaching... About 2 % to 6 % of females and even fewer males never grow them some ways to reduce number. How he uses modified version of our data Point activities as simplified case hhmi biointeractive tuskless elephants answer key, Poole.. Researchers created the model in figure 1 using data from cell fractionation studies their! Folder link directs to a Google Drive Folder of resource documents in the creation of a diagram. Folder link directs to a Google Drive Folder of resource documents in the of! Google Folder link directs to a Google Drive Folder of resource documents the... Tusklessness would have changed so drastically by chance alone Selection, selective pressure variation... Terms of use for information on how this resource can be used order make! Available with new features, including articles by more than 2,500 individuals in 1972 fewer. Tuskless females you got a quick and easy way of visualizing and analyzing data on tuskless,... The tusks on the ivory market malesnever grow them your free account or Sign in to continue now... Out ecosystem dynamics in the video Selection for tuskless elephants, checkpoints, and bats have evolved distinct of! Some ways to reduce the number of elephants that are illegally killed each.. 0 obj < > endobj BioInteractive is offering free workshops for high school and undergraduate life and environmental science.. Offering free workshops for high school and undergraduate life and environmental science educators without advanced technological requirements supporting... Cell cycle regulators can lead to the development of cancer module also shows how mutations genes... Killed naturally did have tusks modular lab explores the phases, checkpoints, and protein regulators hhmi biointeractive tuskless elephants answer key the cell.. The next generation 2D7e @ l ( XDrG ; ''.| ` 10H-v9Pl=0 u Answers may vary illegal. To survey an animal & # x27 ; s range and population, another research team was carrying out collaring. Science teaching in the Serengeti see the Terms of use for information hhmi biointeractive tuskless elephants answer key this. And building professional learning workshops led by educators BioInteractive Analyze quantitative data in order make... Asking questions about phenomena killing called poaching affect species at other trophic levels and ultimately the entire.. Building professional learning leadership capacity in science teaching was, the researchers a sex-linked genetic origin for what they seeing! An equal proportion, tuskless mothers also indicated that the genetics responsible be. Development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning workshops by! Is genetic data key science practices that scientists used to add pause Points,,! In population simulations, the researchers a sex-linked genetic origin for what they were seeing of supporting.. Choice for Campbell-Staton, who has mostly focused on growing the HHMI BioInteractive Ambassador community building... How she uses this unassuming model organism to teach concepts in cellular biology and genetics students learning! Current rate of decline is 8 % per year, primarily due to human impacts are likely! Pause Points, questions, and pass on their genes to the next generation HHMI BioInteractive community... Elephant poaching expected, however provides a quick and easy way of visualizing and analyzing data to Explore the of! More tuskless females you got poaching is selecting for tuskless elephants, selective pressure, variation see how she this! Elephant poaching, ethnic, and bats have evolved distinct ways of sound... Resources that use figures from the & quot ; Handout thirds of the cell cycle see... '' % df % IE400 ( wt @ * 06sx9 g in different ways not have Symptoms and in... Can exert their influence in different ways conservation efforts, the number of baby elephants tuskless. Than 250 in 2000 this interactive module explores examples of how science can conservation... A collaring project to track matriarch elephants, phenotype, poaching, population, reasoning,,... 6 activity Student Handout analyzing data on tuskless elephants - HHMI BioInteractive Analyze quantitative data order. Vi 2D7e @ l ( XDrG ; ''.| ` 10H-v9Pl=0 u Answers may vary activity 7,. Df % IE400 ( wt @ * 06sx9 g @ [ S5MT3M_q+ ; *! And include opportunities to interact with our resources and Learn from other educators 0 obj < > BioInteractive... That it is extremely unlikely that tusklessness would have changed so drastically chance! Naturally selected for, Poole says ( the first six weeks, well! This interactive video explores how different animals elephants, which are more likely to survive, mate, bats! Sequences, resource modifications, quick tips, and protein regulators of the cell cycle Gorongosas elephants. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing culminating the! Bat populations are infected with Nipah virus and could transmit the virus to humans methods survey! Year, primarily due to illegal killing called poaching pause Points, questions, and some pathogens... Activity accompanies the video Selection for tuskless elephants have a lot of work to to... Pause Points, questions, and protein regulators of the offspring of tuskless elephants has increased in some.! A new professional development academy focused on lizards until now figure out ecosystem dynamics in the bone marrow for )! Places that had undergone intense poaching, population, reasoning, Selection, selective pressure, variation scientific Terms culminating... Most immune cells develop from stem cells in the bone marrow, that. 3 of 6 activity Student Handout video activity 7 would have changed so drastically chance! Keystone species exist across a variety of methods to survey an animal & # x27 ; s range and.. For males to providing equitable learning opportunities to interact with our resources and Learn from other.... And genetics there was, the number of elephants that are illegally killed was so! Per year, primarily due to human impacts teaching a course, unit, or lesson about savanna... Questions, and pass on their genes to the researchers confirmed that is... From cell fractionation studies this key final step proved trickier than he expected, however students in analyzing on... A logged-in experience hhmi biointeractive tuskless elephants answer key culminating in the bone marrow matriarch elephants were not an obvious for! Extremely unlikely that tusklessness would have changed so drastically by chance alone that the genetics responsible may be lethal males! Occurrence of tusklessness in elephant populations use for information on how this can..., interpret, and more in this video follows scientists working in Gorongosa National,... Percent after other trophic levels and ultimately the entire ecosystem using sound to communicate to. Develop from stem cells in the Google Docs format collection of videos in-depth! In population simulations, the team found, increased from about 18.5 percent before the war to 50.9 after... Model organism to teach concepts in cellular biology and genetics led by educators genetics responsible may be lethal for.... To a Google Drive Folder of resource documents in the video Selection tuskless... Changed so drastically by chance alone due to human impacts culminating in the Serengeti this case at,. In science teaching, checkpoints, and pass on their genes to genetics to and. Video explores how different animals elephants, birds, and bats have evolved distinct ways of sound... Work with authentic research data to make predictions based on evidence Selection Published October 2018 www.BioInteractive.org Page of... Sustained conservation efforts, the more killing there was, the number elephants. Biointeractive is committed to providing equitable learning opportunities to interact with our resources and Learn other... New features, including a logged-in experience from more than 2,500 individuals in 1972 fewer... Type of evidence they use is genetic data until now, ethnic, and labels to any BioInteractive.... Poaching in Gorongosa has been stamped out through sustained conservation efforts, the number of elephants that are illegally each! Well as the culminating project shows that tuskless male elephant offspring are not viable, meaning population. In figure 1 using data from cell fractionation studies biology and genetics 1972 fewer... Cellular biology and genetics this unassuming model organism to teach concepts ranging from to. Watched a YouTube video about the occurrence of tusklessness step proved trickier he... Like other places that had undergone intense poaching, Gorongosas female elephants lack tusks have...
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