X chromosome

X chromosome
X chromosome n a sex chromosome that usu. occurs paired in each female cell and single in each male cell in species in which the male typically has two unlike sex chromosomes compare Y CHROMOSOME

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the sex chromosome present in both sexes. Women have two X chromosomes and men one. Genes for some important genetic disorders, including haemophilia, are carried on the X chromosomes; these genes are described as sex-linked. Compare Y chromosome.

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the sex chromosome present in two copies in female somatic cells of organisms in which the male is the heterogametic sex, as in humans; it is carried by half the male gametes and all female gametes.

Medical dictionary. 2011.

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