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In a laboratory population of flies, the female flies are gray and the males are yellowish gray. Biologists observed that male flies with the brightest colors were more likely to successfully reproduce. Which type of selection best describes this change?

A. sexual selection
B. disruptive selection
C. stabilizing selection
D. directional selection



Answer :

GinnyAnswer

Final answer:

Directional selection leads to increased genetic variance in a population.


Explanation:

Directional selection results in greater genetic variance in a population. This type of selection selects for phenotypes at one end of the spectrum of existing variation, leading to a shift in the population's genetic variance toward the new, fit phenotype.


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