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Natural Selection - Natural Selection, Evolution, Mutation

Natural Selection - Natural Selection, Evolution, Mutation

http://phet.colorado.edu/en/simulation/natural-selection

Related:  Natural Selection and AdaptationEvolution/BiologyEVOLUTION DES ETRES VIVANTSEvolution

Short Films “Film is a powerful way to tell stories. … The right story, told well, can be engaging, informative, and memorable.” —Sean B. Carroll Five fingers of evolution - Paul Andersen In his talk, Paul Andersen explains the five causes of microevolution. Research one example for each cause in the human population. Use the following population simulator to simulate microevolution: Run the simulation using the default settings. Note the change in gene frequencies due to chance. Reset the simulation and increase the population size to 200.

Rediscovering Biology - Case Studies: The Genetics of Resistance to HIV Infection This case uses the example of HIV, to explore the relationships between viruses, cells and the immune system, and the role of genes in disease resistance. An animation explains PCR (polymerase chain reaction) and electrophoresis and their practical use as a genetic test. We will see how mutations in an HIV receptor confer relative reslstance to infection. We will find out how often this mutation occurs in the general population, and see data about additional mechanisms of HIV resistance. Before beginning this case study, you may want to review these related materials: • HIV and AIDS Video • HIV and AIDS Online Text • Human Evolution Online Text • Genomics Video • Genomics Online Text

Natural Selection Copyright© Copyright The Concord Consortium Record Link <a href="stem-resources/natural-selection">The Concord Consortium. Natural Selection. Cut and Run Legions of athletes, sports gurus, and scientists have tried to figure out why Kenyans dominate long-distance running. In this short, we stumble across a surprising, and sort of terrifying, explanation. At the 1968 summer Olympics in Mexico City, Kipchoge Keino overcame a gall bladder infection to win gold in the 1500 meter race. Since then, one particular group of Kenyans - the Kalenjin - has produced an astonishing number of great long-distance runners. Diseases - Manual - Activity 3, page 1 At a Glance Focus: Students investigate the growth of bacteria in the presence of antibiotics and use the results to explain a case of antibiotic-resistant tuberculosis, presented in an Internet-based interview. Major Concepts: The re-emergence of some diseases can be explained by evolution of the infectious agent (for example, mutations in bacterial genes that confer resistance to antibiotics used to treat the diseases). Objectives: After completing this activity, students will

Male Chromosomes Are Not Dying Soon, Study Finds : News Update Date: Jan 11, 2014 05:31 PM EST A new study has challenged the notion that Y chromosomes are largely unimportant and will no longer exist in the next 5 million years. (Photo : Image Editor/Flickr) Conflicting Selection Pressures Copyright© Copyright The Concord Consortium Record Link <a href="stem-resources/conflicting-selection-pressures">The Concord Consortium. Conflicting Selection Pressures.

Related:  to be filedévolStandard 10.2.1 Calculate and predict the genotypic and phenotyp