Multiple choice

Which among the following explanations regarding the Down's syndrome is false?

  1. The frequency increases severely in mothers after the age of 40.

  2. The genesis is a nondisjunction when chromosomes do not separate during the first meiotic division.

  3. Affected persons have an extra autosome.

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All statements are correct.

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