X chromosome
noun
: a sex chromosome that usually occurs paired in each female cell and single in each male cell in species in which the male typically has two unlike sex chromosomes compare y chromosome
Examples of X chromosome in a Sentence
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None of these women manifested the traits of the disease, because the mutation occurred on one of their two X chromosomes, the other of which lacked the mutation.
—
Jerome Groopman, New Yorker, 6 Apr. 2026
In some cases, the clones even lost an entire copy of their X chromosome.
—Frank Landymore, Futurism, 26 Mar. 2026
Because genetic females have two X chromosomes and genetic males have one X and one Y chromosomes, two out of every three X chromosomes in a population, on average, are inherited from people’s mothers.
—ABC News, 26 Feb. 2026
There’s less Neanderthal DNA on humans’ X chromosome than there is on most other chromosomes today.
—Jackie Flynn Mogensen, Scientific American, 26 Feb. 2026
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Jerome Groopman, New Yorker, 6 Apr. 2026
In some cases, the clones even lost an entire copy of their X chromosome.
—Frank Landymore, Futurism, 26 Mar. 2026
Because genetic females have two X chromosomes and genetic males have one X and one Y chromosomes, two out of every three X chromosomes in a population, on average, are inherited from people’s mothers.
—ABC News, 26 Feb. 2026
There’s less Neanderthal DNA on humans’ X chromosome than there is on most other chromosomes today.
—Jackie Flynn Mogensen, Scientific American, 26 Feb. 2026
See All Example Sentences for X chromosome
Cite this Entry
“X chromosome.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/X%20chromosome. Accessed 12 Apr. 2026.
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