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.
Result of Your Query
heterogameticheterogametisch (ger.)
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(Of a sex or its individual members) producing gametes that differ with respect to a sex chromosome. (OED 1976)
- 1910
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Wilson, E.B. (1910). The chromosomes in relation to the determination of sex. Science Progress 4, 570-592: 572.
- 1982
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heterogametic Having two kinds of gametes, one producing males and the other females; digametic; heterogamy; cf. homogametic.
Lincoln, R.J., Boxshall, G.A. & Clark, P.F. (1982). A Dictionary of Ecology, Evolution and Systematics: 112.