species that undergo sexual selection often have males and females that differ dramatically in phenotype, a phenomenon called sexual dimorphism. since sexual dimorphism is a result of selection for the two extremes of a phenotypic trait, what pattern of selection is this?

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15-12-2022
Biology

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species that undergo sexual selection often have males and females that differ dramatically in phenotype, a phenomenon called sexual dimorphism. since sexual dimorphism is a result of selection for the two extremes of a phenotypic trait, what pattern of selection is this?

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bharathparasad577 bharathparasad577 · Answer 1 · 2022-12-21T01:54:31-05:00

Option A disruptive is the correct answer. This pattern of selection is disruptive because it favours the two extremes of a phenotypic characteristic, which results in sexual dimorphism.

Sexual dimorphism is the systematic shape difference between individuals of different sexes within the same species. For instance, the male in some species, such as many animals, is bigger than the female. The female of some species, like some spiders, is larger than the male. This sexual dimorphism has been noted in early development studies, childhood, adolescence, and maturity. On average, males' total brain size is around 8%–15% greater than females' (uncorrected for body size).

As a result, we can conclude that Option A disruptive is the best choice. Sexual dimorphism results from selection toward the two extremes of a phenotypic characteristic, hence this pattern of selection is disruptive.

Learn more about sexual dimorphism here:

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Complete Question:

Species that undergo sexual selection often have males and females that differ dramatically in phenotype, a phenomenon called sexual dimorphism. Since sexual dimorphism is a result of selection for the two extremes of a phenotypic trait, what pattern of selection is this?

Choose one:

A.disruptive

B.stabilizing

C.directional