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Xeroderma pigmentosum is caused by ______________________

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Xeroderma pigmentosum is caused by ______________________

(a) UV radiations

(b) X-rays

(c) Gamma radiations

(d) Beta-rays

I have been asked this question at a job interview.

The origin of the question is DNA Repair topic in section DNA Replication and Repair, Cellular Reproduction of Cell Biology

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The correct answer is (a) UV radiations

To explain: Xeroderma pigmentosum (XP) is a rare genetic disorder due to deficiency in nucleotide excision repair system that cannot remove segments of DNA damaged by ultraviolet radiations.

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