What characterizes intersexual selection in the process of sexual selection?

Intersexual selection is a key concept in the process of sexual selection, characterized by the preferences of one sex for particular traits in potential mates. Specifically, it often involves one sex—typically females—choosing mates based on visual cues or other secondary sexual characteristics. These traits may include bright coloration, elaborate courtship displays, or intricate songs. The emphasis on visual cues or other appealing characteristics plays a significant role in mate selection, driving the evolution of distinct traits in species.

This mechanism differs from intrasexual selection, where competition among the same sex (usually males) determines which mate will be successful in reproduction. Intersexual selection highlights the active role of female choice in influencing male traits, which can lead to increased genetic diversity and may enhance the survival of the species.

In contrast, selection based on environmental factors refers to natural selection rather than sexual selection. Genetic traits alone do not encompass the behavioral and aesthetic aspects that define intersexual selection. Random selection also does not reflect the active choice made by one sex based on specific traits, which is central to understanding how intersexual selection operates.