Definition of Y chromosome in English:

Y chromosome

noun

Genetics
  • (in humans and other mammals) a sex chromosome which is normally present only in male cells, which are designated XY.

    Compare with X chromosome
    • ‘Genes in the second group are expressed exclusively in testes and form gene families on the Y chromosome.’
    • ‘This is particularly so for sheltered chromosomes without recombination such as the Y chromosome in mammals.’
    • ‘Evidence for concerted evolution of repeated sequences on the human Y chromosome has recently been presented.’
    • ‘Bone marrow derived cells were identified by the presence of the Y chromosome, ordinarily found only in males.’
    • ‘If a gene on the Y chromosome mutates, that piece of the male genetic code may disappear.’

Pronunciation:

Y chromosome

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