Final answer:
Sexual selection promotes traits that decrease survival by favoring elaborate traits that can be costly and increase the risk of predation. These traits are favored because they make individuals more attractive to potential mates and increase their reproductive success.
Step-by-step explanation:
Sexual selection promotes traits that decrease survival through mechanisms such as elaborate traits and survival costs, sexual selection dynamics, and the role of sexual selection in traits decreasing survival.
Elaborate traits, such as elaborate nests, feathers, and antlers, can be costly to produce and maintain. These traits may make individuals more conspicuous to predators, increasing their risk of predation.
However, these traits are often favored by sexual selection because they make an individual more attractive to potential mates. This can lead to greater reproductive success, even if it comes at the expense of survival. For example, peahens choose to mate with peacocks that have the brightest plumage, even though this may make them more vulnerable to predators.
Learn more about Sexual selection and survival costs of traits