Definition of Y chromosome noun from the Oxford Advanced Learner's Dictionary

 

Y chromosome

 noun
noun
BrE
 
; NAmE
 
(biology) Genetic engineering, Cell biology
 
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a sex chromosome. In human males each cell has one X chromosome and one Y chromosome. In human females there is never a Y chromosome. See related entries: Genetic engineering, Cell biology
See the Oxford Advanced American Dictionary entry: Y chromosome