AP BIOLOGY

Detailed explanation-1: -Females want their offspring to survive and prosper, so they want to pick a mate with good genes. By selecting a mate, the females are also picking which males get to pass on their genes.

Detailed explanation-2: -Animals have one main goal: to reproduce and preserve their bloodlines. Different animals have different techniques for achieving that goal, but groups with similar characteristics exhibit some common behaviors.

Detailed explanation-3: -Sexual reproduction involves two ingredients: an egg cell and a sperm cell. Each provides half the genetic information necessary to create a living organism.

Detailed explanation-4: -Most animals reproduce sexually, though in a variety of different ways. Sexual reproduction in animals involves the union of a haploid sperm and a haploid egg to form a diploid zygote, which shares its DNA with both the parent cells.