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Changing Environments and Selection
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AP Biology
APB.353 Changing Environments and Selection
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In a guppy population, bright males gain more mates but are eaten more often by predators. A new predator species arrives and hunts mainly by sight. Which prediction is best?
A
Selection against brightness should strengthen if the added survival cost exceeds the mating benefit of bright coloration.
B
Selection for brightness must strengthen because females already prefer bright males.
C
Predators cannot change sexual selection because mating success and survival are unrelated components of fitness.
D
Bright males will evolve duller genes during their lives after seeing the predator.
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