Use the three micro satellite gels below to analyze a population of 72 individua

Question

Use the three micro satellite gels below to analyze a population of 72 individuals. The microsatellite locus used has three alleles (represent them by E for biggest, F for middle, and G for shortest). Is this a polymorphic or monomorphic locus? Why? What is the frequency of each of the alleles E, F, and G? What is the expected frequency of each of the genotypes (EE, EF, EG, FF, FG, GG)? Use the chi-square analysis to deduce whether the locus for this population is in HWE. Which allele is most likely to be fixed due to genetic drift? Why?

Explanation / Answer

A. It is a polymorphic locus because it has EE EF EG FF FG GG and E is the biggest, F is the middle and G is the shortest.

B. Frequency of each of the allelle E is 0.37, F is 0.37, G is 0.25.

C. Expected frequency is calculated by c2=a0(observed- expected)2/expected.

D . Locus in this is under HWE means Hardy Weinberg equilibrium

E. Allelles E is to be fixed due to genetic drift

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