Slanting eyes, round face, mental retardation, epicanthus (eye folds) are seen in-

Options

A. Klinefelter syndrome
B. Down's syndrome
C. Patau's syndrome
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Identify the Symptoms**: The question lists specific symptoms: slanting eyes, round face, mental retardation, and epicanthus (eye folds).

2. **Evaluate the Options**: We need to assess the conditions that could cause these symptoms. The options provided are likely syndromes related to genetic abnormalities.

3. **Examine Klinefelter Syndrome**: This syndrome occurs in males and is characterized by low testosterone levels, reduced facial and body hair, and infertility. It does not typically present with the symptoms mentioned in the question. Therefore, Klinefelter syndrome is not the correct answer.

4. **Examine Down Syndrome**: Down syndrome is caused by an extra copy of chromosome 21 (trisomy 21). It is associated with characteristic features such as slanting eyes, a round face, mental retardation, and epicanthus. Given the symptoms listed in the question, Down syndrome is a strong candidate.

5. **Examine Patau Syndrome**: Patau syndrome is caused by an extra chromosome 13. Symptoms include severe intellectual disability, physical abnormalities, and low birth weight. However, the specific symptoms mentioned in the question do not align with Patau syndrome.

6. **Conclusion**: Based on the analysis, the correct answer is Down syndrome, as it encompasses all the symptoms listed in the question.

**Final Answer**: Down syndrome.

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