Definition of X chromosome in English:

X chromosome

Syllabification: X chro·mo·some

noun

Genetics
  • (In humans and other mammals) a sex chromosome, two of which are normally present in female cells (designated XX) and only one in male cells (designated XY). Compare with Y chromosome.
    More example sentences
    • In most species males carry a single X chromosome and two autosomes, while females have two copies of both.
    • In contrast to the autosomes, recombination of the X chromosome occurs only in females.
    • The largest cluster of imprinted genes in humans is the X chromosome.

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