Multiple choice

Which of the following genetic disorders was previously known as Mongolian idiocy?

  1. Huntington's disease

  2. Down's syndrome

  3. Edward's syndrome

  4. Klinefelter syndrome
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B Correct answer
Explanation

Down's syndrome is a genetic disorder caused by the presence of all, or part of, a third copy of chromosome 21. It was earlier known as Mongoloid idiocy.

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