There are 23 pairs of chromosomes found in each cell of the body, and each contain genes that determine our coloring, our features, and our sex. Women inherit two X chromosomes -- one from each parent, written 46,XX. Men inherit an X chromosome from their mothers and a Y chromosome from their fathers, written 46,XY. Some individuals, however, have an additional X chromosome in their chromosomal arrangement, referred to as 47,XXY, or more commonly, just XXY. The cause is unknown, yet XXY occurs in approximately 1 in every 500 to 1000 live male births, making it one of the most common chromosome variations. The XXY variation is identified in an individual through a karyotype, a buccal smear, or FISH.
2006-11-19 23:20:50
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answer #1
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answered by ? 4
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47XXY, or Klinefelter syndrome, occurs in 1 in 500-1000 live births. It typically results in tall men with sparse hair, small testicles and an inability to produce sperm. See below for more details.
2006-11-20 07:18:39
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answer #2
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answered by Anonymous
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Are you requesting info on xxyy (Klinefelter's syndrome) or are you offering to share info? Your question is unclear.
2006-11-20 07:52:07
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answer #3
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answered by P-nuts and Hair-dos 7
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