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Klinefelter's syndrome has...

Klinefelter's syndrome has

A

44+XXY

B

44+XO

C

45+XY

D

66+XXY

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Klinefelter's Syndrome**: Klinefelter's syndrome is a genetic condition that occurs in males due to the presence of an extra X chromosome. It is classified as a sex chromosome disorder. 2. **Normal Male Chromosomal Composition**: In a typical male, the chromosomal composition is 44 autosomes and 1 pair of sex chromosomes, which is represented as 44XY. 3. **Identifying the Chromosomal Composition in Klinefelter's Syndrome**: In Klinefelter's syndrome, the individual has an additional X chromosome. Therefore, the chromosomal composition changes from 44XY to 44XXY. 4. **Evaluating the Given Options**: The options provided are: - 44XXY - 44XO - 45XY - 66XXY 5. **Selecting the Correct Option**: The correct chromosomal composition for Klinefelter's syndrome is 44XXY, as it includes the extra X chromosome. 6. **Final Answer**: Therefore, the answer to the question "Klinefelter's syndrome has" is **44XXY**. ---
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