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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Not to mention there are people born with just one X chromosome and some with multiple chromosomes XXY, XYY–and still lead healthy lives.
—
Alex Knapp, Forbes, 24 Jan. 2025
His theory suggested that orange coat color was controlled by a variant on the X chromosome, explaining why ginger cats are mostly male and why tortoiseshell cats, with their mix of orange and non-orange fur, are almost always female.
—Daniel R. Depetris, Newsweek, 6 Dec. 2024
Biological females typically have two X chromosomes (XX), and biological males typically have one X and one Y chromosome (XY).
—Loreben Tuquero, Austin American-Statesman, 7 Aug. 2024
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A simple difference in the genetic code – two X chromosomes versus one X chromosome and one Y chromosome – can lead to major differences in heart disease.
—Amy Huebschmann, Discover Magazine, 24 Oct. 2024
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Alex Knapp, Forbes, 24 Jan. 2025
His theory suggested that orange coat color was controlled by a variant on the X chromosome, explaining why ginger cats are mostly male and why tortoiseshell cats, with their mix of orange and non-orange fur, are almost always female.
—Daniel R. Depetris, Newsweek, 6 Dec. 2024
Biological females typically have two X chromosomes (XX), and biological males typically have one X and one Y chromosome (XY).
—Loreben Tuquero, Austin American-Statesman, 7 Aug. 2024
Newsletter Sign up for our email newsletter for the latest science news
A simple difference in the genetic code – two X chromosomes versus one X chromosome and one Y chromosome – can lead to major differences in heart disease.
—Amy Huebschmann, Discover Magazine, 24 Oct. 2024
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 3 Mar. 2025.
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