best answer > What is the cause of Down syndrome 2024?- QuesHub | Better Than Quora
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  • Harper Martinez——Studied at the University of Zurich, Lives in Zurich, Switzerland.

    The most common form of Down syndrome is known as trisomy 21, a condition where individuals have 47 chromosomes in each cell instead of 46. Trisomy 21 is caused by an error in cell division called nondisjunction. This leaves a sperm or egg cell with an extra copy of chromosome 21 before or at conception.read more >>
    +119962023-04-28 18:45:59

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