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What is the base incorporated by pol eta against a DNA CPD lesion?

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What is the base incorporated by pol eta against a DNA CPD lesion?

(a) AT

(b) GC

(c) GG

(d) AA

This question was addressed to me during an interview for a job.

I want to ask this question from Repair of DNA Damage: Recombinational and Bypass in chapter DNA Mutation, DNA Repair, Transposable Elements of Cytogenetics

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Best answer
Right choice is (d) AA

Explanation: Cyclo butane pyrimidine dimers consist of two T bases joined to form a bulky lesion. Pol eta incorporates two random A base against it.

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