AP BIOLOGY

Detailed explanation-1: -In the sexual reproduction of animals and plants, the male and female gametes join to form a single fertilised cell called a zygote, which develops into a new individual with a unique collection of genetic material.

Detailed explanation-2: -Gamete Formation When the haploid male and female gametes unite in a process called fertilization, they form what is called a zygote. The zygote is diploid and contains two sets of chromosomes.

Detailed explanation-3: -In animals, female gametes are called ova or egg cells, and male gametes are called sperm. Ova and sperm are haploid cells, with each cell carrying only one copy of each chromosome. During fertilization, a sperm and ovum unite to form a new diploid organism.

Detailed explanation-4: -Fertilization is the process in which haploid gametes fuse to form a diploid cell called a zygote. To ensure that each zygote has the correct number of chromosomes, only one sperm can fuse with one egg.