Cell Component
y chromosome Audio
y chro·mo·some
Subclass of:
Sex Chromosomes
Definitions related to y chromosome:
  • The male sex chromosome, being the differential sex chromosome carried by half the male gametes and none of the female gametes in humans and in some other male-heterogametic species in which the homologue of the X chromosome has been retained.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • The sex chromosome present in males of species in which the male is the heterogametic sex; generally, the sex chromosome that pairs with the X chromosome in the heterogametic sex. The Y chromosome is absent from the cells of females and present in one copy in the somatic cells of males.
    Gene Ontology Dictionary
    Gene Ontology Consortium, 2021
  • (chromosome y) The y-shaped sex chromosome. In mammals, its presence or absence determines male or female sex.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
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