Gametes then unite in fertilization and form a diploid zygote.
Sperm and eggs are cells known as gametes.
A sperm and an egg unite in fertilization and form a diploid zygote.
What is formed when a sperm and egg unite in fertilization?

(A) a haploid
(B) two sperms
(C) rapid expansion
(D) gastropod shells
(E) Chemical energy
(F) peachleaf willow
(G) an infant human
(H) a diploid zygote