 A pair of sex cells fail to separate during the formation of an egg or sperm  Embryo ends up with three copies of chromosomes  (XXY)  A recessive trait

 Abnormal body proportions  Infertility  Tall height  Gynecomastia

 Many have normal lives but some are shortened by a few years  This is not curable but treatable The treatment for this disorder is:  Testosterone therapy which helps › Grow body hair › Appearance of muscles › Concentration › Mood, energy, and strength

 The man is most likely unable to have a child and start a family

 It may not be diagnosed until puberty  They sometimes go through emotional and depressing times  Men are more vulnerable to other female diseases

 stratedencyclopedia/1/ html stratedencyclopedia/1/ html  alth/PMH / alth/PMH /  disorders/whataregd/klinefelter/ disorders/whataregd/klinefelter/