In sexual selection, differential reproductive success comes about because of differential success in obtaining _______.

Adv.

Answer:

Sexual selection is a type of natural selection, which is based on differential mating. In sexual selection, the organisms, which are more attractive, are frequency chosen for mating than the less attractive organisms. Thus, sexual selection depends upon the phenotype of the organisms. The word, phenotype represents the physical appearance and behaviour of organisms.

So, in this case, mating does not occur uniformly within a population. The females play an important role in picking up the male partner for mating. But those males, whose phenotypic characteristics are attractive, are chosen more frequently than the ordinary males. This implies that the male, which has attractive phenotype characters mate more often than the other ordinary males in a population.

On an average, if the attractive male mates four times more, than the other males of his generations, the genes responsible for this phenotype pass more frequency to successive generations.

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a. 1, 2

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a. It is a change in allele frequency within populations.

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a. genetic drift.

b. mutation.

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