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XY system
From Wiktionary, the free dictionary
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English
Proper noun
- (biology) The system that determines the sex of humans, most other mammals, some insects (Drosophila), and some plants (Ginkgo), in which females have two of the same kind of sex cell (XX) and males have two distinct sex cells (XY).
- Synonym: XX-XY system
See also
Further reading
XY sex-determination system on Wikipedia.Wikipedia
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