Question

Which term describes the chromosomal abnormality of having three copies of a single chromosome?

Answer 1

Trisomy is the term that describes the chromosomal abnormality of having three copies of a single chromosome. The outcome of this phenomena would have 47 chromosomes in the cell instead of 46. This results in the congenital malformations, serious development and moto delays and a high incidence of mortality.

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Answer 2

The correct answer is a trisomy. Hope this helps.