Klinefelter Syndrome (47, Xxy)

(Klinefelter syndrome) Klinefelter’s syndrome two X chromosomes in addition to a Y-chromosome ? present. The phenotype is male. Klinefelter’s syndrome is the most common sex chromosome disorder. It occurs in about 1 in 500 male live births. The extra X chromosome originates in 60% of cases of the maternal side. The germ cells can not survive in the testes, leading to reduced sperm and androgens. Klinefelter’s syndrome two X chromosomes…

September 3, 2018