All of the following disorders are due to defective nucleotide excision repair, EXCEPT: (A) Xeroderma pigmentosum, (B) Cockayne syndrome, (C) Trichothiodystrophy, (D) Hereditary nonpolyposis colon cancer
Answer is D. Disorders of nucleotide repair Defective nucleotide excision repair Xeroderma pigmentosum Cockayne syndrome Trichothiodystrophy Defective mismatch repair Hereditary nonpolyposis colorectal cancer (HNPCC) Defective non homologous end joining repair Severe combined immunodeficiency disease (SCID)