What is the impact of sexual selection on allelic frequencies in a population?

Sexual selection plays a crucial role in shaping the genetic structure of a population by influencing which traits are favored when individuals compete for mates. This selective pressure can increase the frequencies of alleles that contribute to characteristics considered attractive or desirable by potential mates, such as bright colors, elaborate courtship behaviors, or larger body size.

Through sexual selection, individuals possessing these advantageous traits are more likely to reproduce and pass on their alleles to the next generation. As a result, the frequency of alleles associated with these preferred traits increases in the population over time. This process can lead to significant changes in the population's genetic makeup, favoring certain traits based on mate preferences, which may not necessarily correlate with an individual's ability to survive in their environment.

The randomness of shifts in allelic frequencies, the increase in homozygous recessive traits, or the assertion that sexual selection has no effect on genotypic frequencies does not accurately reflect the targeted influence sexual selection exerts on the evolution of traits within a population.