1. Genetics. having unlike gametes, or reproducing by the union of such gametes (opposed to isogamous).
  2. Botany. having flowers or florets of two sexually different kinds (opposed to homogamous).


  1. Relating to heterogamy.

  1. Alternation of sexual and parthenogenetic generations, as in the life cycles of some aphids.
  2. 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.
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