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Home Q & A Board Science-Related Homework Help Psychology Developmental Psychology
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Soren Soren
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9 years ago
Down syndrome is most commonly caused by
A)   advanced maternal or paternal age.
B)   an error that occurs in the early stages of mitosis, called mosaic pattern.
C)   mutation of the genetic material on the twenty-third chromosome pair.
D)   failure of the twenty-first pair of chromosomes to separate during meiosis.
Textbook 
Child Development

Child Development


Edition: 9th
Author:
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SuperionSuperion
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9 years ago
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Soren Author
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#2
9 years ago
Wow, thank you.
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#3
9 years ago
Mark as solved, don't forget Slight Smile
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