Noun
(biology) reproduction by the union or fusion of gametes of the same size and structure
Source: WordNetGametes can be identical in form and function (known as isogamy ), but in many cases an asymmetry has evolved such that two sex-specific types of gametes (heterogametes) exist (known as anisogamy ). Source: Internet
In either case, gametes may be externally similar, particularly in size ( isogamy ), or may have evolved an asymmetry such that the gametes are different in size and other aspects ( anisogamy ). Source: Internet
In isogamous species, the gametes are similar or identical in form ( isogametes ), but may have separable properties and then may be given other different names (see isogamy ). Source: Internet