A member asked:

What is the reasons that lead to inversion duplication in chromosome 21 that lead to down syndrome?

A doctor has provided 1 answer
Dr. Yelena Kipervas answered

Specializes in Family Medicine

Explanation : Down syndrome is trisomia of 21 chromosome due to abnormal distribution of chromosomes in process of cell's divisions. Some risk factors as mother"s age after 35 years very important.

Answered 8/26/2016

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Which type of chromosomal mutation causes down syndrome?

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