Ｘ染色体えっくすせんしょくたい

noun

X chromosome

Genetics term; one of the two sex chromosomes in many organisms.

• ヒトの女じょ性せいは通つう常じょう二に本ほんのＸ染せん色しょく体たいを持もつ。

  Human females typically have two X chromosomes.