fusion of heterogamous gametes that usually differ in size

(an´ eye sog´ a mee) [Gr. aniso: unequal + gamos: marriage] • The existence of two dissimilar gametes (egg and sperm).

sexual fusion between flagellated gametes of distinctly different sizes and morphologically different

Fusion of motile gametes that are unequal in size; occurs in some Chytridiomycetes, not in any plant pathogenic fungi.

Condition in which the female gamete is larger than the male gamete; contrast with Isogamy

Sexual reproduction involving two types of gametes of different sizes or shapes