Which is associated with defect in DNA repair___________?
Correct answer: A. Xeroderma pigmentosum
- A. Xeroderma pigmentosum
- B. Albinism
- C. Icthyosis
- D. Sickle cell anaemia
Explanation
Xeroderma pigmentosum results from defective nucleotide-excision repair of ultraviolet-induced DNA damage, causing extreme photosensitivity and skin cancers. Albinism affects melanin production, while sickle-cell anaemia is caused by a haemoglobin mutation.
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