X chromosome


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Related to X chromosome: Y chromosome

X chromosome

or X-chro·mo·some (ĕks′krō′mə-sōm′)
n.
The sex chromosome associated with female characteristics in mammals, occurring paired in the female and single in the male.

X chromosome


n.
a sex chromosome of humans and most mammals that determines femaleness when paired with another X chromosome and that occurs singly in males. Compare Y chromosome.
[1910–15]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.X chromosome - the sex chromosome that is present in both sexes: singly in males and doubly in females; "human females normally have two X chromosomes"
sex chromosome - (genetics) a chromosome that determines the sex of an individual; "mammals normally have two sex chromosomes"
Translations

x chromosome

n. cromosoma x, cromosoma sexual diferencial que determina las características del sexo femenino.
References in periodicals archive ?
Three weeks later, the pediatrician called Mark and his parents to tell them that the testing revealed that he had Klinefelter syndrome, or an extra X chromosome in a male.
In another genetically engineered mouse model the researchers linked the X and Y chromosome so this pair could be matched up with an X chromosome, resulting in genetically XXY males.
Reaching a significant goal in the project to explore the mysteries of human genes, biologists have completed a high-resolution map of the X chromosome, one of the pair that determines whether a baby is a boy or a girl.
London, Mar 6 (ANI): A new study finds that what really makes a man is his expression of the lone X chromosome and the activity of a protein complex that gives enzymes on the chromosome an extra boost to increase gene expression.
If the father's X chromosome is paired with one of the mother's X chromosomes, the child will be a girl.
London, Mar 3 (ANI): A new study finds that what really makes a man is his expression of the lone X chromosome and the activity of a protein complex that gives enzymes on the chromosome an extra boost to increase gene expression.
Unlike other chromosomes, the Y exchanges little DNA with its partner, the X chromosome, when the sperm's DNA joins with the eggs.
But most of the Y is unable to exchange DNA with its partner, the X chromosome.
Early in development, the female embryo must shut down one X chromosome in every cell, or an overdose of the genes on those chromosomes will kill her.
In the case of a calico cat, the feline's parents passed on different versions of X chromosome genes related to coat color.
Although the other 22 human chromosome pairs swap DNA in the creation of sperm and eggs, the Y almost completely refrains from exchanging genetic material with its counterpart, the X chromosome.
The X chromosome apparently contains a still-unidentified gene that contributes to one's ability to gauge others' social reactions and to inhibit impulsive acts, contends psychiatrist David H.