Having sex gametes of contrasting types; human males are h.. SYN: digametic. [hetero- + G. gametikos, connubial]
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het·ero·ga·met·ic -gə-'met-ik, -'mēt- adj forming two kinds of gametes of which one determines offspring of one sex and the other determines offspring of the opposite sex <the human male is \heterogametic>
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adj.
describing the sex that produces two different kinds of gamete, which carry different sex chromosome, and that therefore determines the sex of the offspring. In humans men are the heterogametic sex: the sperm cells carry either an X or a Y chromosome. Compare homogametic.
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het·ero·ga·met·ic (het″ər-o-gə-metґik) pertaining to production of gametes containing more than one kind of sex chromosome, as in human males (XY).Medical dictionary. 2011.