Answer: oogamy

AnswerCrossword Clue
OOGAMYCell union
OOGAMYType of reproduction
oogamythe state of having dissimilar gametes
oogamyone of a pair of structurally dissimilar gametes, the female gamete being large and nonmotile and the male gamete being small and motile
oogamyhaving or involving a small motile male gamete and a large immobile female gamete