Definitions for XYY syndrome

This page provides all possible meanings and translations of the word XYY syndrome

Wiktionary

  1. XYY syndrome(Noun)

    An aneuploidy of the sex chromosomes in which a human male receives an extra Y chromosome, giving a total of 47 chromosomes instead of the usual 46; the condition is associated with learning difficulties and above-average height.

Freebase

  1. XYY syndrome

    XYY syndrome is an aneuploidy of the sex chromosomes in which a human male receives an extra Y-chromosome, giving a total of 47 chromosomes instead of the more usual 46. This produces a 47,XYY karyotype, which occurs in 1 in 1,000 male births. Some medical geneticists question whether the term "syndrome" is appropriate for this condition because its clinical phenotype is normal and the vast majority of 47,XYY males do not know their karyotype.

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