Klinefelter Syndrome Definition

klīn ′ fĕl′tər
noun
A condition in which a person has one Y-chromosome and two (or more) X-chromosomes, usually characterized by low testosterone levels, small testicles, tall stature and long limbs, sparse body hair, and infertility.
American Heritage Medicine

A genetic condition in which a male is born with two X chromosome.

Wiktionary
Synonyms:
  • XXY-syndrome
  • Klinefelter's syndrome

Klinefelter Syndrome Sentence Examples

  • By mid-puberty, boys with Klinefelter syndrome have low levels of testosterone, resulting in small testicles and the inability to make sperm.

  • Approximately 3% of the infertile male population have Klinefelter syndrome.

  • Most commonly, a male with Klinefelter syndrome will be born with 47 chromosomes in each cell, rather than the normal number of 46.

  • Because people with Klinefelter syndrome have a Y chromosome, they are all male.

  • Approximately 1/3 of all males with Klinefelter syndrome have other chromosome changes involving an extra X chromosome.

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