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Which of the following scenarios would MOST LIKELY lead to a change in DNA that would increase genetic variation in the individual’s offspring?

A) An A - T base pair changes to a C - G base pair during mitosis in a liver cell of a young man.
B) A G - C base pair changes to an A - T base pair randomly in a young woman's egg cell during meiosis.
C) UV radiation mutates the skin cells of a pregnant mother, changing two G bases to T bases.
D) A virus inserts nine base pairs into a lung cell of an elderly man.


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