Presence of an extra copy of which chromosome leads to the Doen syndrome? Options: A . &nbspchromosome 9 B . &nbspchromosome 11 C . &nbspchromosome 17 D . &nbspchromosome 21

Presence of an extra copy of which chromosome leads to the Doen syndrome?

Question

Presence of an extra copy of which chromosome leads to the Doen syndrome?

Options:

A . chromosome 9

B . chromosome 11

C . chromosome 17

D . chromosome 21

Answer: Option D
Answer: (d).chromosome 21

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