B and S Chapter 3

B and S Chapter 3 - Notes: Chapter 3 Boyd and Silk The...

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Notes: Chapter 3 Boyd and Silk The Modern Synthesis Population Genetics Evolutionary change in a phenotype reflects change in the underlying genetic composition of the population Phenotype : observable characteristics of an organism Genotype : underlying genetic composition Examines the relationship between Darwin’s natural selection and Mendelian genetics *One goal of the evolutionary theory is to determine how genotypic frequencies change over time Genotypic frequencies can be changed by random mating and sexual reproduction EXAMPLE -A trait has two alleles: A and a -To determine the genotypic frequencies, first we calculate the frequency of the two types of alleles in the pool of gametes -Frequency of A = p and the frequency of a = q - q = no. of a gametes / total no. of gametes - q = (no. of a gametes per aa parents)(no. of aa parents) + (no. of a gametes per Aa parents)(no. of Aa parents) / (no. of gametes per parent)(no. of parents) -This equation can be simplified to:
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This note was uploaded on 09/09/2009 for the course ANTH 123 taught by Professor Johnson during the Spring '08 term at UNC.

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B and S Chapter 3 - Notes: Chapter 3 Boyd and Silk The...

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