anisogamy


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an·i·sog·a·my

 (ăn′ī-sŏg′ə-mē)
n.
Sexual reproduction involving two types of gametes that differ in size. Also called heterogamy.

an′i·sog′a·mous adj.

anisogamy

(ˌænaɪˈsɒɡəmɪ)
n
(Biology) a type of sexual reproduction in which the gametes are dissimilar, either in size alone or in size and form
ˌaniˈsogamous adj

anisogamy

a form of reproduction in which dissimilar gametes, often dirfering in size, unite. — anisogamous, anisogamic, adj.
See also: Biology
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.anisogamy - (biology) reproduction by the union or fusion of two differing gametes (especially differing in size)anisogamy - (biology) reproduction by the union or fusion of two differing gametes (especially differing in size)
biological science, biology - the science that studies living organisms
amphimixis, sexual reproduction - reproduction involving the union or fusion of a male and a female gamete
References in periodicals archive ?
In addition to the active digestion of male organelle nuclei by the nuclease, the difference in size between male and female gametes in anisogamous and oogamous organisms indicates that the contribution to the progeny of male organellar genomes (DNA) is small, while that of female gametes is large, suggesting that anisogamy and oogamy reinforce maternal inheritance.
Likewise, sexual selection has been implicated in the evolution of egg size, anisogamy, and egg accessory coats (Levitan, 1998, 2004).
See ANDERSSON, supra note 102, at 10 ("In the minority of species with mainly paternal care, the sex differences in parental roles can override the effects of anisogamy and lead to a reversal of other aspects of sex roles and sexual dimorphism.