AP BIOLOGY

Detailed explanation-1: -The fusion of sperm and ovum (egg cell) is called fertilization. Fertilization results in the formation of a diploid zygote with single nuclei from which a new individual develops.

Detailed explanation-2: -A zygote is a fertilized ovum. The germ cells undergo meiosis to reach a haploid state (n) as part of spermatogenesis and oogenesis. The sperm and the unfertilized ovum reinstates a chromosome set in zygote in a diploid state (2n).

Detailed explanation-3: -Hence, a Zygote is diploid. Each chromosome is present in two homologous, or comparable, copies in almost all human body cells. Due to the presence of both of its parents’ genes, the zygote is diploid (carrying two sets of chromosomes).

Detailed explanation-4: -A zygote is the product of the fusion of an egg and a sperm. It contains two copies of each chromosome, one from each parent. Egg and sperms cells, on the other hand, each contain only one copy of each chromosome. The zygote develops into an embryo.