How to Use X chromosome in a Sentence

X chromosome

noun
  • In some cases, the clones even lost an entire copy of their X chromosome.
    — Frank Landymore, Futurism, 26 Mar. 2026
  • With the most common types, the faulty gene is located on the X chromosome.
    — Beth Warren, The Tennessean, 21 Aug. 2025
  • This signaled that the mutation was somewhere on the X chromosome, since females have two of those, and presumably one lacked the killer mutation.
    — Beth Mole, ArsTechnica, 6 Oct. 2025
  • Aicardi syndrome is an extremely rare condition that results from a mutation on the X chromosome.
    — Erika Edwards, NBC news, 4 Oct. 2025
  • Scientists have long hypothesized that women’s estrogen hormone and their double X chromosome may play a role in their longer lives.
    — Alexa Mikhail, Flow Space, 14 Jan. 2026
  • 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
  • Some research suggests that females might be protected from certain harmful genetic mutations because of the two X chromosomes.
    — Laura Baisas, Popular Science, 1 Oct. 2025
  • Dilute calicos are also typically female because the color genes are located on the X chromosome.
    — Michele Laufik, Martha Stewart, 10 June 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
  • Women are twice as likely as men to develop these disorders because of the second X chromosome, which contains most genes involved in regulating the immune system.
    — Elizabeth Yuko, Flow Space, 30 Sep. 2025
  • The test, which identifies inactivated X chromosomes to determine an athlete’s chromosomal makeup, was done by a cheek swab.
    — Amy Woodyatt, CNN Money, 18 Sep. 2025
  • Females inherit an X chromosome from both parents, while males inherit an X chromosome from their mothers and a Y chromosome from their fathers.
    — Beth Warren, The Tennessean, 21 Aug. 2025
  • Among hominins and other mammals, females typically exhibit two X chromosomes and males carry an X and a Y chromosome.
    — Katie Hunt, CNN Money, 24 June 2026
  • Instead there was much more anatomically modern human ancestry present on Neanderthal X chromosomes than the researchers had expected, including on regions that had nothing to do with fitness.
    — Jackie Flynn Mogensen, Scientific American, 26 Feb. 2026
  • There were other theories as to why that might be, including the possibility that there was some evolutionary disadvantage to the Neanderthal X chromosome in humans.
    — Jackie Flynn Mogensen, Scientific American, 26 Feb. 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
  • Perhaps, researchers have speculated, genes on the X chromosome don’t transfer well between species, or Neanderthal genetic variants on the X chromosome were disadvantageous in some way to human variants and were therefore gradually eliminated by the evolutionary process of natural selection.
    — Katie Hunt, CNN Money, 26 Feb. 2026

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'X chromosome.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Last Updated: