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18 October, 18:41

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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Answers (2)
  1. 18 October, 20:06
    0
    A. Nondisjuntion, because they have an extra cell when the sperm and egg meet.
  2. 18 October, 21:15
    0
    I believe the answer is A, but a cross over could also be possible.
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