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Definition of X chromosome
1. Noun. The sex chromosome that is present in both sexes: singly in males and doubly in females. "Human females normally have two X chromosomes"
Generic synonyms: Sex Chromosome
Definition of X chromosome
1. Noun. (genetics) A mammalian sex chromosome. Cells of females have a pair of X chromosomes while cells of males have an X and a Y. ¹
¹ Source: wiktionary.com
Medical Definition of X chromosome
1.