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2 October, 07:46

Trisomy-21 results from a mutation to the chromosomes in

A. body cells

B. somatic cells

C. gametes

D. skin cells

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Answers (1)
  1. 2 October, 08:13
    0
    Like trisomy 21, mosaic Down syndrome is not inherited. It occurs as a random event during cell division early in fetal development. As a result, some of the body's cells have the usual two copies of chromosome 21, and other cells have three copies of this chromosome
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