Elephant tusks are important for obtaining food and water, and essential to male elephants for competing for mates, so one might expect strong natural selection for having tusks. 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. Lessons. After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. As poaching in Gorongosa has been stamped out through sustained conservation efforts, the number of baby elephants born tuskless has begun to decrease. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. 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. All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. Explain how characteristics associated with biological sex may affect athletic performance. v0E H+1Q` d endstream endobj startxref 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 This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. This activity builds on information presented in the video Selection for Tuskless Elephants. 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. More than 30 years later, she finally may have her answer. rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup %PDF-1.5 % Coherent lesson sequences driven by students asking questions about phenomena. 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. Nature, in this case at least, seems to be correcting itself. 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 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. Scientists are trying to determine the genes involved in tusk development and how variations in these genes can lead to tusklessness. Genetics Evolution Scientific Skills & Literacy Scientists at Work High School General High School AP/IB College 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? This data-driven activity accompanies the video Selection for Tuskless Elephants. 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. No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. Using those samples, they identified candidate regions in the genome that, when mutated, seemed to explain tusklessness and its apparent male lethality. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. What did Dr. Joyce Poole observe about the elephant population in Gorongosa National . Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. 0 Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. iU Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. 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. But in males with no other X chromosome to fall back on, that mutation appears to cause death in the womb. Explain how the selective pressures on a population may impact the frequencies of phenotypes. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. 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! This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. Hhmi Biointeractive Answer Key. 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. As of 2014, about 350,000 savanna elephants were living in Africa. Data Points are useful resources that use figures from the primary literature and guided sets of supporting questions. Knowledge awaits. Key Concepts. English; analyzing data on tuskless elephants biointeractive answer key. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 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. 482 0 obj <>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. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. hb```lRB 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. Posted on 11/01/2021 by 11/01/2021 by It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ 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. But the proportion of tuskless elephants has increased in some populations. Provide evidence-based reasoning that uses available data to support a scientific claim. 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. This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. AQ` n& Determine whether scientific results confirm or contradict a hypothesis. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. In this video, Poole explains a possible reason. 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 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. The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. Thanks for reading Scientific American. 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. %PDF-1.6 % One type of evidence they use is genetic data. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? 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. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. Its something I had puzzled over for so long, says Poole, co-founder and scientific director of ElephantVoices, a nonprofit science and conservation organization. 254 0 obj <> endobj Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. Natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 Activity Student Handout Video Activity 7. a. Like other places that had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion of tusklessness. Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. IB Environmental Systems and Societies (2017). This tool can be used to add pause points, questions, and labels to any BioInteractive video. As you watch the videos, complete the questions from the "Task 1" handout. Explore the methods scientists use to survey elephants. 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. Suggest some ways to reduce the number of elephants that are illegally killed each year. Hear how educators are using BioInteractive content in their teaching. Selection for Tuskless Elephants. %%EOF Scientists . Analyzing Data on Tuskless Elephants. Discover tools to help plan lessons and opportunities to support professional learning. 316 0 obj <>stream Articles that connect current events to BioInteractive resources. 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. 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. |U#62RF>^/,[4@[S5MT3M_q+; u* For context, this course consisted of a three-credit lecture and a one-credit lab. +A,2k]lJ^G@R`Y0~8!CNC!MM5V_.0mLt(P1Gh9 k1]8Ay0 Ik@ +Xndi) g[! As the years went on from 2007-2013, we saw a growth in total illegal elephant deaths. Not all downloadable documents for the resource may be available in this format. Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u A new professional development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning leadership capacity in science education. 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. 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. 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. 6. But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. 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. Poachers, she knew, prioritized elephants with the largest tusks. 318 0 obj <>stream HHMI is investing in increasing racial, ethnic, and gender diversity in academic science to create environments in which everyone can thrive. This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. In this activity, students work with authentic research data to explore the impact of poaching on African elephants. There was a huge skew in the sex ratio, with very few adult males. Video Activity 7. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. 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. Resume watching the video until This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. 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. 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. 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. hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r 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. , that mutation appears to cause death in the sex ratio, with very adult. 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Colleagues make a striking observation: many female elephants lack tusks in tusk development and how variations these... Case at least, seems to be correcting itself after making these,! To determine the genes responsible for tusk development in elephants virus and transmit. Figures from the primary literature and guided sets of supporting questions for what they were seeing most African elephants tusks... By 11/01/2021 by 11/01/2021 by 11/01/2021 by 11/01/2021 by it engages students in data!, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks time and.

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