Question: What is Mosaicism?a . As the embryo develops, the extra chromosome is replicated in every cell of the body.b . Down syndrome is usually caused

What is Mosaicism?a. As the embryo develops, the extra chromosome is replicated in every cell of the body.b. Down syndrome is usually caused by an error in cell division called "nondisjunction."c. Translocation accounts for about 4% of all cases of Down syndrome.d. Mosaicism occurs when nondisjunction of chromosome 21 takes place in one but not all of the initial cell divisions a fertilization.

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