GAMETE
Gamete (gametal cell) is a reproductive cell of animals or plants. Gametes provide transfer of genetical information from parents to their descendants. Gametes contain haploid sets of chromosomes. Female gametes are eggs, or ovicells; male gametes are spermatozoids, or sperm cells. Two gametes, interfusing in insemination, form a zygote with a diploid set of chromosomes, which originates a new organism.
Gametes of the same size are called isogametes; gametes of unequal size are anisogametes. Lager gametes are macrogametes; smaller gametes are microgametes. Development of an organism from an unfertilized gamete is called parthenogenesis.