Dictionary » H » Heterogametic sex

Heterogametic sex



The sex of a species possessing dissimilar sex chromosomes


In humans, the heterogametic sex is the male. The gametes produced may contain either X-chromosome or Y-chromosome.

In other animal species, such as some birds and reptiles, the heterogametic sex is the female. They have two dissimilar sex chromosomes: a W chromosome and a Z chromosome.

Word origin: Greek h├ęteros (other, different)


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... in birds? In birds, and lepidoptera, among others, females are the heterogametic sex (assuming "unmatched" means XY or ZW)

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by Tweedy
Fri Jul 10, 2009 12:36 pm
Forum: Genetics
Topic: heritability of Z-linked trait
Replies: 2
Views: 3511

Anyone know much on Hemizygous?

... humans are referred to as homogametic - they have only one type of sex chromosome, the X. Males are heterogametic, having two different types of sex chromosomes, the X and the Y. In birds and ...

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by wbla3335
Thu Jul 26, 2007 10:37 am
Forum: Genetics
Topic: Anyone know much on Hemizygous?
Replies: 10
Views: 9914

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