Biology
vladneculai
3

People who have an extra X chromosome could have gotten it through (A) nondisjunction. (B) transposition. (C) transduction. (D) crossing over. (E) all of the above.

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(2) Answers
Muddymoy

A. Nondisjuntion, because they have an extra cell when the sperm and egg meet. 

OlgaNixson682

I believe the answer is A,but a cross over could also be possible.

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