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What (who) is Chromosome X - definition
SEX CHROMOSOME PRESENT IN BOTH SEXES, OF SPECIES IN WHICH THE MALE IS THE HETEROGAMETIC SEX
Chromosome X (human); Chromosomes, human, x; X chromosomes; X-chromosome; X Chromosome; Chromosome X; Human chromosome X; Human X chromosome; X chromosome (human); Unguarded X hypothesis
X chromosome
(X chromosomes)
An X chromosome is one of an identical pair of chromosomes found in a woman's cells, or one of a non-identical pair found in a man's cells. X chromosomes are associated with female characteristics. Compare Y chromosome
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N-COUNT
X chromosome
¦ noun Genetics (in humans and other mammals) a sex chromosome, two of which are normally present in female cells (designated XX) and only one in male cells (designated XY). Compare with Y chromosome.
X-chromosome reactivation
Draft:X chromosome reactivation
X chromosome reactivation (XCR) is the process by which the inactive X chromosome (the Xi) is re-activated in the cells of eutherian female mammals. Therian female mammalian cells have two X chromosomes, while males have only one, requiring X-chromosome inactivation (XCI) for sex-chromosome dosage compensation.
Wikipedia
X chromosome
The X chromosome is one of the two sex chromosomes in many organisms, including mammals, and is found in both males and females. It is a part of the XY sex-determination system and XO sex-determination system. The X chromosome was named for its unique properties by early researchers, which resulted in the naming of its counterpart Y chromosome, for the next letter in the alphabet, following its subsequent discovery.
Examples of use of Chromosome X
1. When Nick Patterson of MIT and his colleagues at the Broad Institute compared the genes of humans and chimps, they found that one of the chromosomes –– the female sex chromosome X –– was 1.2 million years younger than the others.