The following Web sites are just some of the interesting resources related to evolution. As you link to the sites, compare and contrast the information on the site with what you have learned in class, from the textbook, and from other sources you have read. Be sure to share interesting sites with your classmates.
1) How Are Populations, Genes, and Evolution Related?
Hardy-Weinberg Equilibrium Model
- A site that reviews the assumptions of Hardy-Weinberg equilibrium and presents the mathematical calculation of equilibrium genotype frequencies. It includes a sample problem on albinism in humans.
Multidrug-Resistant Tuberculosis Fact Sheet
- The American Lung Association's site for facts and current information on the spread of multidrug-resistant tuberculosis. A number of links to other relevant sites are included.
2) What Causes Evolution?
The Founder Effect
- An essay on modern-day examples of the founder effect that may be taking place in the Hawaiian islands. Plant and animal species from outside the islands are being accidentally introduced by travel to Hawaii, and may strongly influence the future species composition of Hawaii.
Introduction to Evolutionary Biology
- This very complete, though sometimes advanced, introduction to evolution includes discussions of common misconceptions, genetic variation, natural selection, sexual selection, genetic drift, mutation, recombination, gene flow, macroevolution and speciation, extinction, and punctuated equilibrium. In addition there are sections on "A Brief History of Life," "The Scientific Standing of Evolution and Its Critics," and "The Importance of Evolution in Biology."
3) How Does Natural Selection Work?
Natural Selection and Genetic Drift Modeling Exercise
- This site provides a comprehensive explanation of natural selection and the evidence for it.
A Mutation Story
- A detailed description of the genetic basis for sickle cell anemia in humans, the resistance to malarial infection in sickle cell heterozygotes, and the balanced polymorphism that results. A link to a 5-minute video on the topic is included.
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