Genetic drift, migration, & natural selection One gene controls the coat colorat

Question

Genetic drift, migration, & natural selection One gene controls the coat coloration trait in mice. Of 60 mice in a population, 4 express a recessive yellow hair trait while the rest express the dominant brown hair trait. Assuming this population is in Hardy-Weinberg equilibrium calculate the frequency of the dominant allele in this population. the frequency of the recessive allele in this population. the frequency of heterozygotes in this population. After several years on the island the population has grown and the frequencies of alleles have changed. List four factors that may be causing the change in allele frequencies. The moth Biston betularia exhibits a daytime resting behavior in which it remains stationary on a tree trunk. During this time the moth is vulnerable to predation by birds, and must rely on crypsis to avoid being eaten. Prior to the Industrial Revolution, most trees and moths were light colored. Soot produced by factories during the Industrial Revolution caused trees to become progressively darker. Assume that trees became totally soot covered in an eight-year period, and did so in linear fashion. Construct one properly formatted and labeled line graph showing how you would expect the frequency of dark colored moths to change over an eight-year period beginning with the Industrial Revolution and how you would expect the frequency of a population of dark moths undergoing genetic drift with no active selective pressures to change over the same period of time.

Explanation / Answer

1. c

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