Not true among the following is

A. Most common cause of Down's syndrome is Maternal meiotic disjunction.

B. Most Common inherited condition causing Intellectual disability in Fragile X Syndrome

C. The mandible in Down's child is smaller than usual

D. Isolated finding of simian crease in Down's in seen in almost 20% of Down's children.

Correct Answer: Isolated finding of simian crease in Down's in seen in almost 20% of Down's children.

Description: Isolated finding of simian crease in Down's in seen in almost 1% of Down's children. So it is not a significant finding in a Down's child.

Category: Pediatrics

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