Question

A butterfly species is found on two neighbouring islands. 8% of the population on island 1...

A butterfly species is found on two neighbouring islands. 8% of the population on island 1 has spotted wings, a recessive trait (the presence of wing spots is encoded by a single locus with two alleles). Only 5% of the population on island 2 has spotted wings.

Some butterflies from island 1 were blown to island 2 during a severe hurricane and 20% of island 2’s population now consists of individuals blown over from island 1. Answer the following questions:

Q2 What is the frequency of the recessive allele in the butterfly population on island 2 after the hurricane ?

0.21

0.23

0.0004

0.0006

0.0008

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