X-chromosome reactivation - meaning and definition. What is X-chromosome reactivation
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What (who) is X-chromosome reactivation - definition


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.
X chromosome         
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  • The number of possible ancestors on the X chromosome inheritance line at a given ancestral generation follows the Fibonacci sequence. (After Hutchison, L. "Growing the Family Tree: The Power of DNA in Reconstructing Family Relationships".<ref name="xcs"/>)
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 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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X chromosome         
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  • The number of possible ancestors on the X chromosome inheritance line at a given ancestral generation follows the Fibonacci sequence. (After Hutchison, L. "Growing the Family Tree: The Power of DNA in Reconstructing Family Relationships".<ref name="xcs"/>)
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
¦ 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.