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X-chromosome

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
X-chro·mo·some or X chromosome (kskrm-sm)
n.
The sex chromosome associated with female characteristics in mammals, occurring paired in the female and single in the male.

X-chromosome
n
(Life Sciences & Allied Applications / Biology) the sex chromosome that occurs in pairs in the diploid cells of the females of many animals, including humans, and as one of a pair with the Y-chromosome in those of males Compare Y-chromosome

X-chromosome  (kskrm-sm)
The sex chromosome that in female mammals is paired with another X-chromosome and in males is paired with a Y-chromosome. Very few genes on the X-chromosome have counterparts on the Y-chromosome, and since males have only one X-chromosome, any gene present on it (even if the gene is recessive in females) is expressed in males. In females, one of the two X-chromosomes in each cell is deactivated. See more at sex chromosome. See note at sex.
Translations
X-chromosome
nX-Chromosom nt
X-chromosome [ˈɛksˈkrəʊməsəʊm] ncromosoma m X


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gambiae to characterize the whole X-chromosome for different gene compositions and fine-scale study of each individual genes of known function.
During embryo development, in a step necessary to survival, one of the X chromosomes is silenced in each female cell to ensure that the levels of X-derived products are equalized in XX females and XY males, via a process known as X-Chromosome Inactivation (XCI).
David Nelson, an X-chromosome expert at the Baylor College of Medicine, described the map produced by Schlessinger's team as a ``tour de force.
 
 
 
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