47,XYY syndrome

47,XYY SYNDROME

  • 47,XYY syndrome is characterized by an extra copy of the Y chromosome in each of a male's cells.
  • This condition occurs in about 1 in 1,000 newborn boys.
  • Other names people use for 47,XYY syndrome
    • Jacob's syndrome
    • XYY Karyotype
    • XYY syndrome
    • YY syndrome
  • Main phenotypic characteristics
    • Although males with this condition may be taller than average, this chromosomal change typically causes no unusual physical features.
    • Most males with 47,XYY syndrome have normal sexual development and are able to father children.
Index

Previous

Home

Next

Last modified: Saturday, 23 July 2011, 6:56 AM