Multiple choice general knowledge

The chromosomal disorder caused by the presence of all or part of an extra 21st chromosome is commonly called…?

  1. Edwards Syndrome

  2. Trisomy

  3. Patau Syndrome

  4. Down’s Syndrome
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Down Syndrome is caused by trisomy 21 - having three copies of chromosome 21 instead of the usual two. Edwards Syndrome is trisomy 18, Patau Syndrome is trisomy 13, and 'Trisomy' alone is too general to be the specific answer.

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