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Unformatted text preview: Gene Drift: Random sampling of alleles. Greater influence in small populations (<100) Results in greater differences between populations. Biocultural: Endogamy, polygamy, colonization, disaster. Founder effect: Individuals from a large population move to a different location… new population looks different. Bottleneck: There’s a population with variation between alleles… Because of some event the majority of the population dies off. Purely random in eliminating all that variation. Microevolutionary Process: Sickle Cell Trait Point Mutation Natural Selection Gene Flow Hemoglobin Chromosome 11 ‘P’ arm 2 codominant alleles A and S S= beta chain mutation 3 Genotyoes AA : “Normal” AS : A portion of the blood cells sickle SS : Sicke Cell Anemia...
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This note was uploaded on 03/01/2012 for the course ANT 131 taught by Professor Shannonnovak during the Spring '09 term at Syracuse.
- Spring '09
- Biological Anthropology