Sexual selection is a type of Response area. Sexual selection refers to an organism's ability to obtain a mate. Selection makes many organisms go to extreme lengths to attract a mate: peacocks maintain elaborate tails, Response area fight over territories, Response area perform dances. Going to even more extreme lengths, the male redback Response area flings itself into the jaws of death in order to mate successfully. Sexual selection is powerful enough to produce features that are harmful to the individual's survival. For example, the colorful tail feathers of the peacock are likely to attract Response area as well as interested mates.

However, these feathers also make the peacock more visible to predators, putting it at a higher risk of being hunted. Despite this drawback, the benefits of successfully attracting a mate outweigh the costs of potential predation.

In some species, sexual selection can also result in competition among males for access to females. This competition can lead to physical combat, elaborate displays, or other behaviors that demonstrate fitness and dominance. For example, male deer engage in antler battles to establish dominance and secure mating rights.

Overall, sexual selection plays a significant role in the evolution of morphological and behavioral traits in a population. It drives the development of secondary sexual characteristics that enhance reproductive success, even if they come at a cost to individual survival. By shaping the characteristics that make an organism desirable to potential mates, sexual selection ultimately influences the genetic diversity and fitness of a species.