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The sex chromosome present in both sexes of species in which the female is the heterogametic sex. Two copies of the Z chromosome are present in each somatic cell of males and one copy is present in females. 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. Organized structure of distinctive morphology and function, not bounded by a lipid bilayer membrane and occurring within the cell. Includes ribosomes, the cytoskeleton and chromosomes. A protein or protein-RNA complex that localizes to one or more of the sex chromosome(s), where it acts to normalize transcription between different sexes. A chromosome involved in sex determination. A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information. The sex chromosome present in both sexes of species in which the male is the heterogametic sex. Two copies of the X chromosome are present in each somatic cell of females and one copy is present in males. The sex chromosome present in females of species in which the female is the heterogametic sex; generally, the sex chromosome that pairs with the Z chromosome in the heterogametic sex. The W chromosome is absent from the cells of males and present in one copy in the somatic cells of females. A condensed mass of compacted chromatin that represents an inactivated X chromosome.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: sex chromosome
Acc: GO:0000803
Aspect: Cellular Component
Desc: A chromosome involved in sex determination.
Proteins in PDR annotated with:
   This term: 0
   Term or descendants: 36 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0000803 - sex chromosome (interactive image map)
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