A) 44 + XXY
B) 44 + XO
C) 44 + XXX
D) 44 + YY
Correct Answer: A
Solution :
The genotype of the Klinefelters syndrome patient is 44 + XXY instead of 44 + XY. (i.e., this is due to an extra X-chromosome). These are male individuals who are pheribtypicaly fairly normal but have a very low sperm count and therefore sterile. Turners syndrome are characterised by monosomy of sex chromosomes (44 + XO) These are immature female (sterile) with webbed neck. The individual with (44 + YY) can not survive.
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