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1. Oxford American Dictionary

   X chromosome

   • IPA[ˈeks ˌkrōməˌsōm]

   美式

   • n.
     (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).

   • noun: X chromosome, plural noun: X chromosomes

2. • 相關詞

   X chromosome inactivation

   • n.
     the phenomenon in a female mammal whereby the genes in one of the pair of X chromosomes are ...

   Oxford Dictionary

3. • 更多解釋

   X chromosome

   • IPA[ˈɛks ˌkrəʊməsəʊm]

   英式

   • n.
     (in humans and other mammals) a sex chromosome, two of which are normally present in female ...

   Oxford Dictionary