A person with 47 chromosomes due to an additional Y chromosome

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A person with 47 chromosomes due to an additional Y chromosome suffers from a condition called

1. Down's syndrome
2. Superfemale
3. Turner's syndrome
4. Klinefelter's syndrome

Correct Option: D

Klinefelter's syndrome is formed by the union of an XX egg and a normal Y sperm or normal X egg and abnormal XY sperm. The individual has 47 chromosomes (44 + XXY).