male heterogamety

male heterogamety

[′māl ¦hed·ə·rō¦gam·əd·ē]
(genetics)
The production by males of some species, such as humans and Drosophila, of two types of gametes that differ in their sex chromosome content.
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References in periodicals archive ?
The independent origins of multiple sex chromosomes via centric fusion involving a cryptic Y chromosome in the widely divergent Megupsilon and Garmanella suggests that cryptic male heterogamety (XY) might have characterized the most-recent common ancestor of the Cyprinodontina.
Production of all female and sterile coho salmon, and experimental evidence for male heterogamety.
Production of all-female and sterile coho salmon, and experimental evidence for male heterogamety.
The data show that the male hybrid unfitness is found in the five taxa with male heterogamety.
We compared taxa with female heterogamety to their nearest closest relatives with male heterogamety, and asked in which of those sister taxa is female hybrid inviability more common.
There is some suggestion that male heterogamety in this group is derived [Hillis and Green 1990] and that male hybrids have lower fertility [Spurway 1953].