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  4. A pregnant woman, who has done amniocentesis test, finds an extra barr body in her embryo. The syndrome which is likely to be associated with embryo is

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Q. A pregnant woman, who has done amniocentesis test, finds an extra barr body in her embryo. The syndrome which is likely to be associated with embryo is

AIIMSAIIMS 1997Principles of Inheritance and Variation

Solution:

Klinefelter’s syndrome is characterized by trisomy (XXY). These are male individuals, who are phenotypically fairly normal but have a very low sperm count and, are therefore sterile. As the syndrome has two X chromosomes, one barr body is seen in this case.