Question

Which of the following is a characteristic symptom of Down syndrome?

• A. Abnormal growth of hair.
• B. Heart murmurs.
• C. Skin rash.
• D. Eye color changes.

Hint:

Down syndrome is caused by trisomy of chromosome 21 and is often associated with congenital heart defects, intellectual disabilities, and distinct facial features.

Answer 1

The Correct Option is B

Step 1: Down syndrome overview. Down syndrome is a genetic condition resulting from an extra copy of chromosome 21 (trisomy 21), leading to diverse physical, developmental, and physiological differences.

Step 2: Typical manifestations. Common signs include cardiac anomalies like heart murmurs, a flattened facial structure with upward-slanting eyes, and varying degrees of intellectual disability and developmental delays.

Step 3: Evaluation of choices.Option (A): Incorrect. Aberrant hair growth is not a defining symptom.

Option (B): Correct. Heart murmurs frequently accompany congenital heart conditions in individuals with Down syndrome.

Option (C): Incorrect. Skin eruptions are not characteristic.

Option (D): Incorrect. Variations in eye color are not linked to Down syndrome. \[ \therefore \text{The correct answer is: Heart murmurs.} \]