Question

Assertion: The persons with Klinefelter syndrome are sterile males. Reason: Klinefelter syndrome is due to trisomy.
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Answer 1

Answer:

Klinefelter’s syndrome is a genetic condition that only affects males. The condition is present from birth and is due to an extra X chromosome. Normal males have 45 + XY chromosomes but males with Klinefelter’s syndrome have 45 + XXY chromosome. This condition arises due to non-disjunction at the time of gamete formation leading to formation of abnormal gamete. When either a normal egg fuses with abnormal sperms (XY) or an abnormal egg (XX) fuses with a normal sperm it results in an abnormal zygote, which develops into a boy with the syndrome.

Answer 2

Answer:

(c) is correct

Explanation:

Klinefelter’s syndrome is a genetic condition that only affects males. The condition is present from birth and is due to an extra X chromosome. Normal males have 45 + XY chromosomes but males with Klinefelter’s syndrome have 45 + XXY chromosome. This condition arises due to non-disjunction at the time of gamete formation leading to formation of abnormal gamete. When either a normal egg fuses with abnormal sperms (XY) or an abnormal egg (XX) fuses with a normal sperm it results in an abnormal zygote, which develops into a boy with the syndrome

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