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Unformatted text preview: II. The four main forces of evolution A. Change due to introduction of new variants 1. Mutation and recombination = appearance of new alleles or allelic combinations 2. Gene flow = introduction of new variants from elsewhere B. Change due to biased transmission of variants to next generation 1. Genetic drift = chance differences in survival and reproduction of variants 2. Natural selection = differential survival and reproduction of variants due to differential “success” (much attention devoted to this throughout the course) BioNB 2210: Lecture 05 Sept. 2, 2011...
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- Fall '10
- Evolution, Biology Letters, Zuk, behavioral evolution, Professor Kerry Shaw, new variants