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. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. 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. eaht``wC(#U]}I)C Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Why no tusks? Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. Explain how characteristics associated with biological sex may affect athletic performance. Description. Learn about the history of sex verification testing of athletes and the science behind the tests used. 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. 0 Keep up with the latest from BioInteractive! Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 %%EOF It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. But the proportion of tuskless elephants has increased in some populations. Propose a claim supported by scientific evidence to answer a research question. This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 7. v0E H+1Q` d BioInteractive is committed to providing equitable learning opportunities to educators and students. endstream endobj 416 0 obj <. 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. As of 2014, about 350,000 savanna elephants were living in Africa. Most African . Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. Please see the Terms of Use for information on how this resource can be used. Create your free account or Sign in to continue. 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. 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. The human immune system is made up of many cells, organs, and tissues. 255 0 obj <> endobj Analyzing Data on Tuskless Elephants. Suggest some ways to reduce the number of elephants that are illegally killed each year. Most immune cells develop from stem cells in the bone marrow. 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. 2023 Scientific American, a Division of Springer Nature America, Inc. 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. hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u Selection for Tuskless Elephants. 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. Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! There was a huge skew in the sex ratio, with very few adult males. 254 0 obj <> endobj In this video, Poole explains a possible reason. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ 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. Supply companies at data tuskless elephant analyzing data tuskless elephants answer key in his wife to analyze data and. Analyzing Data on Tuskless Elephants Pre-Video Activity 1. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. Howard Hughes Medical Institute Statistical Data Explorer. In particular, they often are missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants. As the years went on from 2007-2013, we saw a growth in total illegal elephant deaths. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? Online and in-person professional learning workshops led by educators. 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. video until time 1:46 and answer the following questions. The accompanying worksheet guides students exploration. This data-driven activity accompanies the video Selection for Tuskless Elephants. 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. 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. Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. %%EOF But why werent there any tuskless males?. This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. 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! Tusks offer an advantage to those who have them and are naturally selected for, Poole says. Such a deep genetic understanding of complex evolutionary changes in large free-ranging animals would have been unobtainable just a few years ago.. Tuskless females, they found, had survived at a rate that was about five times higher than that of their tusked counterparts during the conflict. endstream endobj 256 0 obj <. II. hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r %PDF-1.5 % Video Activity 7. 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. 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 Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. Answers Biointeractive Hhmi - Effebi.biella.it. The same high-quality resources are now available with new features, including a logged-in experience. +A,2k]lJ^G@R`Y0~8!CNC!MM5V_.0mLt(P1Gh9 k1]8Ay0 Ik@ +Xndi) 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 immune system responds to pathogens in two main ways: innate and adaptive immune responses. Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. This video follows the work of researchers conducting the first census. Thanks for reading Scientific American. 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. This data-driven activity accompanies the video Selection for Tuskless Elephants. 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. We know we have a lot of work to do to address racial inequities in science teaching. 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. hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! Use evidence-based predictions to explain how a population changes over time due to human impacts. This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change. iU Posted on 11/01/2021 by 11/01/2021 by Fortunately, another research team was carrying out a collaring project to track matriarch elephants. 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. Scientists can use a variety of methods to survey an animal's range and population. Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. Knowledge awaits. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. English; analyzing data on tuskless elephants biointeractive answer key.