Definition of Y chromosome in English:

Y chromosome

Syllabification: Y chro·mo·some


  • (In humans and other mammals) a sex chromosome that is normally present only in male cells, which are designated XY. Compare with X chromosome.
    More example sentences
    • If a gene on the Y chromosome mutates, that piece of the male genetic code may disappear.
    • Genes in the second group are expressed exclusively in testes and form gene families on the Y chromosome.
    • Bone marrow derived cells were identified by the presence of the Y chromosome, ordinarily found only in males.

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