ELI5: Explain Like I'm 5

Sexual selection

Sexual selection is a process that explains how and why animals choose their mates. Just like when you pick your favorite candy at the store, animals also choose which mate they want. This process is called sexual selection.

In the animal world, males and females have specific characteristics that make them unique. For example, male peacocks have colorful tails, while female peacocks have more modest-looking feathers. These characteristics are called traits, and they are important to both males and females.

Males often have the specific trait that females like. For example, male birds have brightly colored feathers that make them stand out, and females like that. They choose the males with these traits to mate with because they give them the best chance of having strong and healthy babies.

But it's not just about appearance. Males can also show off their other traits, like strength, intelligence, and even their songs. Females may choose a male that has a strong and powerful roar, which shows he can protect her and their babies.

In some species, males also compete against each other for female attention. For example, male deer may fight each other with their antlers to prove their strength to the females.

Sexual selection is vital to the survival of the species. By carefully selecting their mates, animals increase their chances of having strong and healthy offspring. It's like picking the best candy at the store - you want the one that will make you the happiest and keep you satisfied.