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English definition of “Y-chromosome”

Y-chromosome

noun [C]     /ˈwaɪˌkrəʊ.mə.səʊm/ US  /-ˌkroʊ.mə.soʊm/
a sex chromosome (= structure containing chemical patterns) that exists only in male cells: If a Y-chromosome combines with an X-chromosome during fertilization, a male baby will result.GeneticsInnate and congenital
(Definition of Y-chromosome noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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