Final answer:
Sexual selection is the process that leads to differences in traits between males and females of the same species.
Explanation:
Sexual selection is the mechanism that causes traits to be different between males and females of the same species. It occurs through intrasexual selection (male-male or female-female competition for mates) and intersexual selection (female or male selection of mates), leading to the evolution of distinct traits that enhance reproductive success. For example, male-male competition can result in the development of fighting abilities, while female choice can lead to traits like colorful feathers for attracting mates.
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