Klinefelter inwards 1942 reported an abnormal manly someone syndrome, which came to endure known every bit Klinefelter syndrome . Individuals amongst this syndromes are phenotypically males but amongst style towards femaleness. They exhibit roughly abnormal features such every bit enlarged breasts, underdeveloped trunk hair, together with modest testes together with prostrate glands. They commonly convey long legs together with hands. The chromosome complements inwards most of the affected persons is 47, XXY. They convey an extra X inwards add-on to the commons manly someone complement XY(44+XXY). The XXY constitutions originate either past times fertilization of an XX egg past times Y sperm or an X egg past times an especial XY sperm. One inwards every 500 manly someone births is the victim of this syndrome. An abnormal human woman someone phenotype, called Turner syndrome , was described past times H. H. Turner together with associates 1938. It occurs inwards close 1 per 500...
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