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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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Jules3791 Jules3791
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11 years ago
Say there's a large population of moths that have a single gene that controls wing color. Half of the moths have white wings, which is dominant and can come from the genotype WW or Ww. The other half have brown wings, which are recessive, ww. There's no natural or sexual selection on wing color, no new mutations, and the population is isolated from gene flow. Would the frequency of the dominant allele increase and become more common or stay constant?
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#1
11 years ago
It wouldn't necessarily do either.  It could decrease in frequency.  It would probably eventually change because of genetic drift.
http://en.wikipedia.org/wiki/Genetic_drift
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