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A syndrome is characterized by the furro...

A syndrome is characterized by the furrowed tongue , characteristics palm creases , mental retardation and short-statured with a small round head. It is due to the anomaly of which of the following chormosomes ?

A

X

B

Y

C

18th

D

`21^(st)`

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The correct Answer is:
To solve the question regarding the syndrome characterized by a furrowed tongue, characteristic palm creases, mental retardation, short stature, and a small round head, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Symptoms**: The symptoms mentioned in the question are: - Furrowed tongue - Characteristic palm creases - Mental retardation - Short stature - Small round head 2. **Recognize the Syndrome**: These symptoms are indicative of a specific genetic disorder. The combination of these features is commonly associated with Down syndrome. 3. **Understand Down Syndrome**: Down syndrome is a chromosomal disorder caused by the presence of an extra chromosome. It is also known as Trisomy 21 because it involves an extra copy of chromosome 21. 4. **Determine the Chromosomal Anomaly**: In Down syndrome, the anomaly occurs due to the presence of three copies of chromosome 21 instead of the usual two. This is what is referred to as Trisomy 21. 5. **Select the Correct Answer**: Based on the information above, the correct answer to the question regarding which chromosome is involved in this syndrome is chromosome 21. ### Final Answer: The syndrome is due to an anomaly of chromosome 21 (Trisomy 21). ---
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