Author Question: What is the source of the extra chromosome 21 in an individual with Down syndrom (Read 428 times)

Hungry!

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What is the source of the extra chromosome 21 in an individual with Down syndrome?
A) nondisjunction in the mother only
B) nondisjunction in the father only
C) duplication of the chromosome
D) nondisjunction or translocation in either parent
E) It is impossible to detect with current technology.



camila

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100% it's D, don't forget to gimmi a thumbs up :D



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Hungry!

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Thanks so much, you were right on.



 

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