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English definition of “X-chromosome”

X-chromosome

noun [C]     /ˈeksˌkrəʊ.mə.səʊm/ US  /-ˌkroʊ.mə.soʊm/
a sex chromosome (= structure containing chemical patterns ) which exists as a pair in the cells of females and with a Y-chromosome in the cells of male animals GeneticsInnate and congenital
(Definition of X-chromosome noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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