Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The sex chromosome associated with female characteristics in mammals, occurring paired in the female and single in the male.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun genetics Alternative spelling of
X chromosome .
Etymologies
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Examples
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This is because she will have one X-chromosome with an alteration in the SH2D1A gene (inherited from her mother) and one X-chromosome with a normal copy of the SH2D1A gene (inherited from her father).
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A male child will always receive an X-chromosome from his mother and a Y-chromosome from his father.
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Since males have a single X-chromosome, they have only one copy of the SH2D1A gene.
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This female carrier, however, can pass her X-chromosome with the SH2D1A alteration to a proportion of her future children.
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If a man with X-linked lymphoproliferative syndrome (and hence an SH2D1A alteration) has children with a female partner who does not carry an alteration in SH2D1A, he will either pass on a Y-chromosome to his sons (who will therefore be unaffected by the syndrome) or he will pass the X-chromosome with the SH2D1A alteration to his daughters (who will be X-linked lymphoproliferative syndrome carriers).
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The Y-chromosome in males does not contain the same genesthat are carried on the X-chromosome.
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He tries to rationalize the mistake of being born in a boy's body, concluding that his second X-chromosome must have gotten accidentally tossed in the garbage; voices his plans to marry his friend and neighbor Jerome when he's finally not a boy; and loves dresses, makeup, and the not-Barbie-not-even-a-little-bit doll Pam.
Marion Johnson: Where to Find Positive LGBT Characters in Pop Culture Marion Johnson 2011
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He tries to rationalize the mistake of being born in a boy's body, concluding that his second X-chromosome must have gotten accidentally tossed in the garbage; voices his plans to marry his friend and neighbor Jerome when he's finally not a boy; and loves dresses, makeup, and the not-Barbie-not-even-a-little-bit doll Pam.
Marion Johnson: Where to Find Positive LGBT Characters in Pop Culture Marion Johnson 2011
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Similarly there is a 50 percentchance that he will inherit the X-chromosome with the normal SH2D1A gene copy.
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If a woman has one X-chromosome with an alteration in SH2D1A and her other X-chromosome has a normal SH2D1A gene, she is said to be a “carrier.”
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