The peppered moth (Biston betularia) is commonly found across England. This moth

Question

The peppered moth (Biston betularia) is commonly found across England. This moth has two color morphs: dark and light. Color in peppered moth is controlled by a single gene. The allele for the dark color morph (D) is dominant to the allele for the light color morph (d). Heterozygotes are dark in color. In 1848, the light color morph comprised 99% of the peppered moth population. What is the genotype of the light color morph moth? What does the 'd' allele do in the peppered moth? Be specific. What is the frequency of the recessive allele in 1848? Show your work to earn full credit. What is the frequency of the dominant allele in 1848? Show your work to earn full credit. In 1959, dark moths comprised 90% of the peppered moth population. What is the frequency of the dominant and recessive allele in 1959? Show your work to earn full credit. Based on these data, would an evolutionary biologist claim that the population of peppered moths had evolved from 1848 to 1959? Briefly explain your reasoning.

Explanation / Answer

Ans 5. The genotype of light coloured moth will be dd.

As mentioned in the question D for dark colour is dominant over the light coloured allele d, and even the heterozygous Dd expresses dark colour, so the light colour will be expressed by the homozygous pair of recessive alleles that is dd.

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