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Consider the same pitymouse populations in West Texas (pitymice are either tan w

ID: 191850 • Letter: C

Question

Consider the same pitymouse populations in West Texas (pitymice are either tan with black spots or tan with white spots, both phenotypes occur in most populations). Experiments have shown that if white-spotted pitymice are more common, predatory snakes tend to ignore the black-spotted mice. If black-spotted mice are more common, the snakes tend to ignore the white-spotted mice.

As part of an 20-yr ongoing study, you record the phenotypes of a population of 500 pitymice 1x/year. Last year you recorded 60% pitymice had black spots. Which phenotype has a higher fitness for this species?

The white-spot phenotype has higher relative fitness.

Explanation / Answer

I think the answer would be the lat one, i.e the The fitness advantage should oscillate between black-spotted to white-spotted. if you have any further queries, dont hesitate to ask, Thank you.