Multiple choice

Which among the following is a non-inherited genetic syndrome?

  1. Down syndrome

  2. Turner syndrome

  3. Deletion syndrome

  4. Williams syndrome
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A Correct answer
Explanation

Down syndrome is also called Trisomy 21. It is one of the most common, non-inherited genetic syndrome. It occurs in about 1 of every 200 to 250 births. In Down syndrome, a mistake in how the chromosomes segregate causes a child to inherit an extra chromosome 21.

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