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6391 Biochemistry

A 10 year old girl is brought to the dermatologist by her parents. She has many freckles on her face, necks, arms and hands and parents repo that she is unusually sensitive to sunlight. Two basal cell carcinomas are identified on her face. Which of the following processes is most likely to be defective in this patient?

ARepair of double stranded breaks
BRemoval of mismatched bases from the 3' end of Okazaki fragments
CRemoval of pyrimidine dimers from DNA
DRemoval of uracil from DNA.
Biochemistry
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