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Sex Chromosomes

  • Female: XX
  • Male: XY
  • Survivable errors
    • XXX...female
    • XYY...male
    • X0...female (Turner's syndrome)
    • XXY...male (Klinefelter's syndrome)

Comments

There can also be chromosomal errors dealing only with the single sex chromosome. In humans females have two copies of the "X" sex chromosome (i.e., XX); males have one copy of the "X" and one copy of the "Y" sex chromosome (i.e., XY).