heterogameticadj.
/ˌhɛtərəʊɡəˈmiːtɪk/ Biology.
Of a sex or its individual members: producing gametes that differ with respect to a sex chromosome. Opposed to homogametic adj.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > gametes
gametic1883
gametal1888
oogamous1888
progamic1891
heterogamous1895
gametoid1903
heterogametic1910
homogametic1910
pregamic1934
planogametic1957
1910 E. Wilson in Science Progress IV. ii. 572 If the two kinds of spermatozoa be designated as the ‘X-class’ and the ‘Y-class’, respectively, the eggs are all of the X-class. The male may, accordingly, be designated as the heterogametic sex, the female as the homogametic.
1930 R. A. Fisher Genet. Theory Nat. Select. 164 Crossing over has been found to occur between the ‘sex-chromosomes’ in the heterogametic sex, whether male as in Lebistes, or female as in Platypoecilus.
1971 Nature 18 June 432/1 In the Lepidoptera, males are homogametic and females heterogametic.
Derivatives
ˌheteroˈgamety n. the state or condition of being heterogametic.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > gametes > state of
heterogamy1894
heterogamety1932
homogamety1939
1932 E. W. Sinnott & L. C. Dunn Princ. Genetics (ed. 2) x. 215 Two kinds of sperm (male heterogamety) are formed in equal numbers, half with X, and half with Y.
1966 Amer. Naturalist 100 122 The fact that heterogametic males do occur suggests..that P. nubifer is probably in the process of changing from male to female heterogamety.
1971 Nature 18 June 432/2 In animals with female heterogamety, many authors refer to the chromosome which is present only in females as W and the paired sex chromosomes of males as ZZ.
This entry has not yet been fully updated (first published 1976; most recently modified version published online September 2018).
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adj.1910