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
Recent Examples on the Web
What about women who have Turner syndrome or only have one X chromosome or men with Klinefelter syndrome with an XXY karyotype?
—
Naperville Sun, Chicago Tribune, 20 June 2025
The reasons aren’t fully understood—theories include the possibility of a more responsive immune system, an additional X chromosome or the idea that mothering makes women robust—but the pattern is clear.
—Anne Marie Chaker, Time, 18 June 2025
Male kittens, also like most other male mammals, have one X chromosome and one Y chromosome.
—Gayoung Lee, Scientific American, 15 May 2025
The scientists knew that females usually have just one copy of the mutation and in that case have tortoiseshell (partially orange) coloring, although in rare cases, a female cat will be orange if both X chromosomes have the mutation.
—ArsTechnica, 31 May 2025
See All Example Sentences for X chromosome
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Naperville Sun, Chicago Tribune, 20 June 2025
The reasons aren’t fully understood—theories include the possibility of a more responsive immune system, an additional X chromosome or the idea that mothering makes women robust—but the pattern is clear.
—Anne Marie Chaker, Time, 18 June 2025
Male kittens, also like most other male mammals, have one X chromosome and one Y chromosome.
—Gayoung Lee, Scientific American, 15 May 2025
The scientists knew that females usually have just one copy of the mutation and in that case have tortoiseshell (partially orange) coloring, although in rare cases, a female cat will be orange if both X chromosomes have the mutation.
—ArsTechnica, 31 May 2025
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 30 Jun. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share