Multiple choice

Extra 18th autosomal chromosome results in

  1. Paton's syndrome

  2. Edward's syndrome

  3. Down's syndrome

  4. None of the above
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B Correct answer
Explanation

Edward's syndrome is caused by trisomy 18, which is the presence of an extra 18th autosomal chromosome. Down's syndrome involves chromosome 21, and Patau's syndrome (misspelled as Paton's in the options) involves chromosome 13.

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