Question

When is the diploid number restored to the zygote?

A.when the male and female haploid cells combine
B.when the male and female diploid cells combine
C.after the zygote is replicated
D.when the two zygotes develop into a haploid cell

Answer 1

The answer would be A.

Haploid is n. When male and female gametes(haploid cells) combine they form a diploid cell(2n, zygote).

Answer 2

During sexual reproduction, fertilization of the ovum (n, 23 chromosomes) by the sperm (n, 23 chromosomes) restores the diploid number and creates a zygote (2n, 46)

when the male and female haploid cell combine