Test 1 Notes #2

# Test 1 Notes #2 - Thursday For Two allele locus Let p= the...

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2/4/2010 Thursday For Two allele locus: Let p= the frequency of one allele in the population (usually the dominant) Let q= the frequency of the other allele Notice that: p + q = 1 P=1-q q=1-p Genotypes should occur in the population according to p^2 + 2pq + q^2 = 1 Hardy-Weinberg Equation P^2 = proportion of the population that is homozygous for the first allele. 2pq= proportion of population that is heterozygous Q^2 = proportion of population that is homozygous for the second allele. -should be able to find p or q given p or q. If p=.6 what is q? .4 What would be 2pq be if p=.6? .5 Hardy-Weinberg Equilibrium Is a null model…. Like Newton’s first law of motion- Every object tends to remain in a state of uniform motion (or stasis) assuming no external force is applied to it. The Hardy-Weinberg equation will be satisfied as long as no evolution takes place Population Genetics and Evolution Evolution: change in gene frequencies in a population over time. -Due to differential reproduction among organisms bearing different alleles.

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Test 1 Notes #2 - Thursday For Two allele locus Let p= the...

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