Gametes then unite in fertilization and form a diploid zygote, and sperm and eggs are cells known as gametes. Given these facts, what is formed when a sperm and egg unite in fertilization among the following options:
- a haploid
 - two sperms
 - rapid expansion
 - gastropod shells
 - Chemical energy
 - peachleaf willow
 - an infant human
 - a diploid zygote


 

        a diploid zygote 