Question

Most mammals have diploid body cells and haploid gametes. During __________, chromosomes from haploid gametes combine, and a __________ zygote is formed.
A.
implantation, diploid
B.
fertilization, diploid
C.
implantation, haploid
D.
fertilization, haploid

Answer 1

Answer: B). fertilization, diploid

Explanation: During fertilization, the sperm cell (a gamete) fuses with an ovum or egg (a gamete) to form a zygote. Each of the gametes have haploid number of chromosomes (23 chromosomes) and they fuse to produce a zygote with a diploid number (46 i.e., 23 pairs) of chromosomes.