Whats the relationship between a zygote and fertilization?

The joining of a sperm and egg is called fertilization. The sperm and egg are called haploid cells. When the sperm and egg join (fertilization), it creates a diploid cell. This fertilized cell is called a zygote.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

the answer is c on e2020, bud.