Found 61 resources for:
genes
¡Feliz cumpleaños número 200, Darwin!
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 30 minutes
Overview
Este 12 de febrero se cumplirían 200 años del nacimiento de Charles Darwin, y todo el mundo esta invitado a la fiesta. Numerosos grupos alrededor del mundo — desde niños en las escuelas primarias, hasta museos e iglesias — celebraran la ciencia de la evolución con conferencias públicas, clases, obras teatrales, exhibiciones artísticas y muchísimas galletas con forma de tortugas. 'Evolución en las noticias' de este mes contribuye a la celebración mediante la revisión de un tema cercano y querido por Darwin: los pinzones de Galápagos...
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¿Decisiones de conservación difíciles? Pregúntale a la evolución
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
¿Si tu casa se incendiara, que es lo que te llevarías cuando estés huyendo? La decisión puede ser difícil entre juguetes de niños, álbumes de fotos y documentos importantes compitiendo por tu atención. Desafortunadamente, nos enfrentamos con una decisión difícil cuando tenemos que definir nuestros esfuerzos de conservación. Las actividades humanas podrían estar desencadenado la sexta extinción masiva de la Tierra...
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Adaptation to altitude
Grade Level(s):
- 9-12
- 13-16
Source:
- Smithsonian National Museum of Natural History
Resource type:
- Classroom activity
Time: Eight 50-minute class periods
Overview
In this set of sequenced lessons, students learn how to devise an experiment to test the difference between acclimation and adaptation; investigate how scientific arguments show support for natural selection in Tibetans; design an investigation using a simulation based on the Hardy-Weinberg principle to explore mechanisms of evolution; and devise a test for whether other groups of people have adapted to living at high altitudes.
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Allele and phenotype frequencies in rock pocket mouse populations
Grade Level(s):
- 9-12
- 13-16
Source:
- Howard Hughes Medical Institute
Resource type:
- Classroom activity
Time: One or two class 50-minute periods
Overview
This video and worksheet use real rock pocket mouse data collected by Dr. Michael Nachman and his colleagues to illustrate the Hardy-Weinberg principle.
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Aloha, spider style! The work of Rosemary Gillespie
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Research profile
Time: one class period
Overview
This research profile follows Dr. Rosemary Gillespie to Hawaii as she evaluates hypotheses about the evolution of the colorful happy-face spider.
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Artificial Selection with Elaine Ostrander and Team
Grade Level(s):
- 9-12
- 13-16
- Advanced
Source:
- UC Museum of Paleontology
Resource type:
- Classroom activity
Time: 1 hr
Overview
In this article (and the linked assignments and student readings), students examine and interpret data that the team used to study the genes undergoing artificial selection during the development of different dog breeds. Use the tabs at the bottom of the feature to find related videos, assignments, and lessons to build this example into a lesson sequence on artificial selection.
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Breeding Bunnies
Grade Level(s):
- 9-12
- 13-16
Source:
- WGBH
Resource type:
- Classroom activity
Time: One class period
Overview
Students simulate breeding bunnies to show the impact that genetics can have on the evolution of a population of organisms.
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Evo in the news: “Superweed” discovered in Britain?
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 10 minutes
Overview
This news brief, from October of 2005, describes the discovery of an herbicide resistant weed in Britain and illustrates the relationship between genetic engineering and evolution.
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Evo in the news: A chink in HIV’s evolutionary armor
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
Medical researchers have spent billions of dollars and many decades trying to develop an HIV vaccine but have, thus far, failed. Why is an HIV vaccine so elusive? This news brief from March 2007 explains how HIV's rapid rate of evolution challenges medicine and describes a new discovery that may allow vaccine developers to sidestep that evolution.
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Evo in the news: A fish of a different color
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 15 minutes
Overview
This news brief, from February 2006, describes how a mutated zebrafish gene may help us understand human evolution and the genes underlying human skin color. Humans and zebrafish both inherited the same pigmentation gene from their common ancestor.
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Evo in the news: Antibiotic resistant bacteria at the meat counter
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
This news brief from May 2013 describes research showing that a large percentage of the meat in supermarkets is contaminated with antibiotic resistant bacteria. An evolutionary perspective explains how antibiotic resistance arises in the first place and why the prevalence of resistant bugs in livestock has health professionals and scientists worried.
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Evo in the news: Better biofuels through evolution
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
This news brief from April 2009 describes how synthetic biologists are using the process of directed evolution to improve the efficiency of biofuel production.
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Evo in the news: Cheating cheetahs prosper
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 15 minutes
Overview
Biologists have discovered that female cheetahs consistently seek out multiple mates. This news brief, from July 2007, explains how the evolutionary implications of this behavior may help conservation efforts targeting these endangered animals.
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Evo in the news: Coping with climate change
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
This news brief from May 2009 explores the difference between phenotypic plasticity and evolutionary change in relation to the media's coverage of climate change.
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Evo in the news: Evolution and the avian flu
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 10 minutes
Overview
This news brief, from November of 2005, describes the threat of avian flu. The stage is set for this virus to evolve into a strain that could cause a deadly global pandemic.
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Evo in the news: Evolution at the scene of the crime
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 15 minutes
Overview
This news brief, from March 2006, describes how DNA fingerprinting is being used to prosecute and exonerate the accused. DNA fingerprinting relies on the processes of mutation and genome evolution.
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Evo in the news: Evolution down under
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
This news brief, from September of 2008, describes an unusual contagious cancer currently decimating Tasmanian devil populations. Learn about the fascinating interplay between the evolution of the devils and the evolution of the disease.
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Evo in the news: Evolution in the fast lane?
Grade Level(s):
- 9-12
- 13-16
- Advanced
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
Have humans, with all of our technological advances, exempted ourselves from further evolution? Perhaps not. This news brief, from February 2008, examines genetic research which suggests that human evolution may haved actually accelerated in our recent history.
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Evo in the news: Evolution’s dating and mating game
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
This news brief from May of 2008 describes new research on octopus mating and reveals how evolution can favor some surprising courtship behaviors.
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Evo in the news: Evolutionary evidence takes the stand
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
This news brief, from January of 2007, describes the role of phylogenetic evidence in a Libyan court case. Six medical workers have been convicted of injecting children with HIV-tainted blood - but the evolutionary history of the virus paints a different picture.
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Evo in the news: Genealogy enthusiasts mine DNA for clues to evolutionary history
Grade Level(s):
- 9-12
- 13-16
- Advanced
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 15 minutes
Overview
This news brief, from November 2007, turns an evolutionary lens on businesses that use DNA for genealogy research and, in the process, illuminates what their genetic tests really track.
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Evo in the news: Ghosts of epidemics past
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
HIV and malaria both constitute global health threats, respectively affecting more than 30 million and 200 million people worldwide. This news brief from October 2008 describes new research that reveals an unexpected evolutionary link between the two.
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Evo in the news: Got lactase?
Grade Level(s):
- 9-12
- 13-16
- Advanced
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
The ability to digest milk is a recent evolutionary innovation that has spread through some human populations. This news brief from April 2007 describes how evolution has allowed different human populations to take advantage of the nutritional possibilities of dairying and links evolution with the prevalence of lactose tolerance among people of different ethnicities.
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Evo in the news: Happy 200th, Darwin!
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 30 minutes
Overview
This news brief, from February 2009, celebrates Darwin's bicentennial by examining what we've learned about the evolution of the Galapagos finches since Darwin's time.
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Evo in the news: Hotspots for evolution
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 15 minutes
Overview
Why are there so many different species in the tropics? This news brief, from June 2006, suggests why: warmer weather may be linked to a quicker pace for evolution.
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Evo in the news: Making sense of ancient hominin DNA
Grade Level(s):
- 9-12
- 13-16
- Advanced
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 10 minutes
Overview
In March 2010 German researchers announced that they had managed to extract DNA from the 40,000 year old fossil bone from a child discovered in a Siberian cave and that it didn't match up to the known genetic sequences of either humans or Neanderthals! This news brief examines the evidence in more detail and considers what that evidence might — or might not — mean about such claims.
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Evo in the news: Quick evolution leads to quiet crickets
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
The tropical island of Kauai has always been a quiet place, but now it may be getting even more quiet. This news brief, from December 2006, reveals how Kauai's cricket population has evolved into a "chirpless" variety in just a few years.
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Evo in the news: Seeing the tree for the twigs
Grade Level(s):
- 9-12
- 13-16
- Advanced
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 15 minutes
Overview
Recent research has revealed that, in at least some ways, chimpanzees have evolved more than humans have. This news brief from May 2007 delves into this finding further and, in the process, debunks common misperceptions of human evolution.
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Evo in the news: Superbug, super-fast evolution
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
Methicillin-resistant staph infections now contribute to more US deaths than does HIV. This news brief from April of 2008 explains the quirks of bacterial evolution that make them such a threat.
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Evo in the news: The new shrew that’s not
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
This news brief from March of 2008 describes scientists' discovery of a new mammal species, a giant elephant shrew. Though elephant shrews resemble regular shrews, recent genetic evidence suggests that elephant shrews actually sprang from a much older (and perhaps more charismatic) branch of the tree of life - the one belonging to elephants and their relatives.
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Evo in the news: The other green (r)evolution
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
Though corn is "all-natural" in some ways, in others it is entirely manmade. This news brief from February 2007 explains the evolutionary tools that ancient humans used to engineer modern corn and the tools that scientists are using today to reconstruct corn's evolutionary history.
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Evo in the news: Tough conservation choices? Ask evolution
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
The earth is facing a biodiversity crisis. Nearly 50% of animal and plant species could disappear within our lifetime. To stem this rapid loss of biodiversity, we'll need to act quickly — but where should we begin? This news brief, from December 2008, explains how evolutionary history can help us set conservation priorities.
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Evo in the news: Tracking SARS back to its source
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 15 minutes
Overview
This news brief, from January of 2006, traces the source of the SARS virus. Using phylogenetics, biologists have come up with a plausible path of transmission which may help us prevent future outbreaks of diseases such as HIV, SARS, and West Nile virus.
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Evo in the news: Warming to evolution
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 15 minutes
Overview
Global warming increasingly affects many aspects of our environment, from the sea level to tropical storm strength. But that's far from the full story. This news brief from July 2006 describes how global warming has already begun to affect the evolution of several species on Earth.
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Evo in the News: When fighting leukemia, evolutionary history matters
Grade Level(s):
- 13-16
- Advanced
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 30 minutes
Overview
This news brief, from December 2011, describes how evolutionary history can factor into the success of a bone marrow transplant.
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Evo-devo
Grade Level(s):
- 13-16
- Advanced
- General
Source:
- UC Museum of Paleontology
Resource type:
- Tutorial
Time: 20 minutes
Overview
Understanding the process of development can help us understand how some major evolutionary changes occurred and why others did not.
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Evolución 101
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Article
Overview
¿Qué es la evolución y cómo funciona? Introducción a la evolución ofrece información detallada y práctica sobre los patrones y los mecanismos de la evolución.
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Evolution and Antibiotic Resistance
Grade Level(s):
- 9-12
- 13-16
Source:
- WGBH
Resource type:
- Classroom activity
Time: One to three class periods
Overview
Students learn why evolution is at the heart of a world health threat by investigating the increasing problem of antibiotic resistance in such menacing diseases as tuberculosis.
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Evolution and Phylogenetic Analysis
Grade Level(s):
- 13-16
Source:
- Wilfred A. Franklin
Resource type:
- Lab activity
Time: Two 3-hour sessions
Overview
In a flexible multisession laboratory, students investigate concepts of phylogenetic analysis at both the molecular and the morphological level. Students finish by conducting their own analysis on a collections skeletons using the Mesquite software.
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Evolution of human skin color
Grade Level(s):
- 9-12
- 13-16
Source:
- Smithsonian National Museum of Natural History
Resource type:
- Classroom activity
Time: Seven to ten 50 minute class periods
Overview
Students examine evidence for the relationship between UV and melanin in other animals; investigate the genetic basis for constitutive skin color humans; learn to test for natural selection in mouse fur color; investigate how interactions between UV and skin color in humans can affect fitness; and explore data on migrations and gene frequency to show convergent evolution of skin color.
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Evolutionary trees from the tabloids and beyond
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- Evolution: Education and Outreach
Resource type:
- Article
Time: 30 minutes
Overview
This article describes practical applications of phylogenetics, focusing on intriguing cases ripe for deployment in classrooms — like using phylogenetics to investigate crimes.
This article appears at SpringerLink.
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Fire ants invade and evolve
Grade Level(s):
- 9-12
- 13-16
- Advanced
- General
Source:
- UC Museum of Paleontology
Resource type:
- Article
Time: 40 minutes
Overview
Understanding the evolution of fire ants may help scientists control the spread of these pests, which have already taken over much of the U.S.
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From the origin of life to the future of biotech: The work of Andy Ellington
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Research profile
Time: 30-40 minutes
Overview
This research profile examines how scientist Andy Ellington has co-opted the power of artificial selection to construct new, useful molecules in his lab. The results of his work could help protect us from terrorist attacks and fight HIV and cancer.
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Gene switches
Grade Level(s):
- 13-16
Source:
- Howard Hughes Medical Institute
Resource type:
- Classroom activity
Time: Two 45-minute blocks
Overview
This lesson explains how genetic switches function and their role in the process of evolution through the use of clips from the HHMI DVD, Evolution: Constant Change and Common Threads, and the construction of a model. This activity can be done as a demonstration, a student inquiry activity, or a combination of the two.
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High altitude adaptations: The work of Emilia Huerta-Sánchez
Grade Level(s):
- 13-16
- Advanced
Source:
- UC Museum of Paleontology
Resource type:
- Research profile
Time: 30 minutes
Overview
This research profile follows statistician and population geneticist Emilia Huerta-Sánchez as she studies the adaptations that allow Tibetan highlanders to live 13,000 feet above sea level without developing altitude sickness.
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Juego evolutivo de citas y apareamiento
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
Largamente asumidos como solitarios, al menos una especie de pulpo lleva una compleja vida amorosa. El mes pasado, los biólogos Christine Huffard, Roy Caldwell y Farnis Boneka reportaron los resultados de los primeros estudios a largo plazo sobre el comportamiento de apareamiento de pulpos en la naturaleza...
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Malaria
Grade Level(s):
- 9-12
- 13-16
Source:
- Smithsonian National Museum of Natural History
Resource type:
- Classroom activity
Time: Seven 50-minute class periods
Overview
In this advanced 4-lesson curriculum unit, students examine evidence to compare four different explanations for why many malarial parasites are resistant to antimalarial drugs; investigate how scientific arguments using G6PD data show support for natural selection in humans; design an investigation using a simulation based on the Hardy-Weinberg principle to explore mechanisms of evolution; and apply their understanding to other alleles that have evolved in response to malaria.
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Mejores biocombustibles gracias a la evolución
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Evo in the News article
Time: 20 minutes
Overview
Actualmente, la mayoría de nosotros llenamos nuestro tanque de gasolina con combustibles fósiles, es decir, restos de plantas y animales que murieron muchos millones de años atrás y eventualmente se convirtieron en petróleo — pero, por supuesto, esto no puede perdurar para siempre. El petróleo es un recurso limitado y en algún momento se va a terminar. Para ayudar a solucionar este problema, muchos científicos, políticos, gente de negocios y ciudadanos preocupados han puesto sus esperanzas en los biocombustibles...
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Molecular genetics of color mutations in rock pocket mice
Grade Level(s):
- 13-16
Source:
- Howard Hughes Medical Institute
Resource type:
- Classroom activity
Time: 50 minutes
Overview
This lesson requires students to transcribe and translate portions of the wild-type and mutant rock pocket mouse Mc1r genes and compare sequences to identify the locations and types of mutations responsible for the coat color variation described in a short film.
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Monkey opsins
Grade Level(s):
- 13-16
Source:
- Evo-Ed
Resource type:
- Case study
Time: Two class periods
Overview
This case study in the form of a set of PowerPoint slides examines the evolution of trichromatic vision in old world monkeys.
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Mouse fur color
Grade Level(s):
- 13-16
Source:
- Evo-Ed
Resource type:
- Case study
Time: One to two class periods
Overview
This case study in the form of a set of PowerPoint slides examines the evolution of light fur in beach mice from the molecular level up to the population genetics level.
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Natural selection and evolution of rock pocket mouse populations
Grade Level(s):
- 13-16
Source:
- Howard Hughes Medical Institute
Resource type:
- Classroom activity
Time: 50 minutes
Overview
This lesson serves as an extension to the Howard Hughes Medical Institute short film The Making of the Fittest: Natural Selection and Adaptation. It provides an opportunity for students to analyze amino acid data and draw conclusions about the evolution of coat-color phenotypes in the rock pocket mouse.
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Pea taste
Grade Level(s):
- 13-16
Source:
- Evo-Ed
Resource type:
- Case study
Time: One to two class periods
Overview
This case study in the form of a set of PowerPoint slides examines the evolution of the wrinkled pea from its ancestral round pea shape.
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The genes that lie beneath: The work of Leslea Hlusko
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Research profile
Time: 40 minutes
Overview
Evolutionary biologist Leslea Hlusko's research takes her from the deserts of Ethiopia, where she hunts for hominid and primate fossils, to a baboon colony in San Antonio where she takes thousands of measurements of the primates' imposing canines. This research profile describes how the two projects are linked by a hunt for genetic variation, a key component of natural selection.
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The Making of the Fittest: The Birth and Death of Genes
Grade Level(s):
- 6-8
- 9-12
- 13-16
- Student
Source:
- Howard Hughes Medical Institute
Resource type:
- Video
Time: 15-20 minutes
Overview
This 13-minute film describes how scientists have pieced together the evolutionary history of the Antarctic icefish by studying its genome – an excellent case study for genetic evolution as both the gain and loss of genes have led to key adaptations.
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Toxin resistance in clams
Grade Level(s):
- 13-16
Source:
- Evo-Ed
Resource type:
- Case study
Time: 1 to 2 class periods
Overview
This case study in the form of a set of PowerPoint slides examines the evolution of toxin resistance in clams.
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Using trees to understand plants: The work of Chelsea Specht
Grade Level(s):
- 9-12
- 13-16
- General
Source:
- UC Museum of Paleontology
Resource type:
- Research profile
Time: 30 minutes
Overview
This research profile follows scientist Chelsea Specht as she pieces together the evolutionary history of tropical plants and their pollinators--and in the process, tries to figure out how to conserve endangered species.
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Webcast: Fossils, genes, and embryos
Grade Level(s):
- 9-12
- 13-16
- Advanced
- General
Source:
- Howard Hughes Medical Institute
Resource type:
- Video Lecture
Time: 60 minutes
Overview
In lecture three of a four part series, evolutionary biologist David Kingsley examines the original objections to Darwin's theory and shows how modern evidence supports the theory.
This lecture is available from Howard Hughes' BioInteractive website.
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Webcast: Selection in action
Grade Level(s):
- 9-12
- 13-16
- Advanced
- General
Source:
- Howard Hughes Medical Institute
Resource type:
- Video Lecture
Time: 60 minutes
Overview
In lecture two of a four part series, evolutionary biologist David Kingsley discusses how just a few small genetic changes can have a big effect on morphology, using examples from maize, dog breeding, and stickleback fish.
This lecture is available from Howard Hughes' BioInteractive website.
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What does it mean to be human?
Grade Level(s):
- 9-12
- 13-16
Source:
- Smithsonian National Museum of Natural History
Resource type:
- Classroom activity
Time: 8 x 50-minute class periods
Overview
In this set of advanced lessons, students use different types of data to infer/interpret phylogenies among domains, within the vertebrates, and within primates while reflecting on how they answer the question "What do you think it means to be human?" and choose a characteristic that changed substantially in the human family tree to develop a scientific argument based on evidence for when the character evolved.
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Why the eye?
Grade Level(s):
- 13-16
- Advanced
- General
Source:
- UC Museum of Paleontology
Resource type:
- Article
Time: 30-45 min
Overview
Eyes are something of an icon of evolution. How did such an integrated, multi-part adaptation evolve? While many different animals have complex eyes, untangling their evolutionary history reveals both remarkable diversity and surprising similarity.
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