Yours, Etc.: Origins and Uses of 8 Sign-Offs
heterogamous het·er·og·a·mous (hět'ə-rŏg'ə-məs)adj. Relating to heterogamy.
Alternation of sexual and parthenogenetic generations, as in the life cycles of some aphids.
A reproductive system that is characterized by the fusion of gametes (called heterogametes) that are dissimilar in size and structure, such as the egg and sperm of animals.