Positive selection on a population confers

Question

Quizplus · Accepted Answer

Positive selection refers to selection that increases the frequency of a beneficial allele in a population, thereby increasing the fitness of individuals who carry that allele. This can lead to increased survival and reproduction, as well as the spread of the beneficial allele throughout the population. While heterozygote advantage may occur in some cases, the overall effect of positive selection is increased fitness and reproductive success, rather than decreased reproduction. Stronger individuals may also benefit from increased success in finding mates and reproducing successfully. Therefore, option B, increased fitness, is the most accurate description of the effect of positive selection on a population.

Positive Selection on a Population Confers