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Klinefelter's syndrome, is a condition caused by males inheriting an extra X chromosome in addition to their already existing sex chromosomes. Typically having an XXY instead of a normal XY sex chromosomes.

Symptoms include:

  • Sterility (almost all the time)
  • Gynecomastia; which is increased growth of breasts
  • Hypogonadism; which is decreased testicular hormones
And generally, having more female sex characteristics and less male sex ones.
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18y ago

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