<prompt> Xeroderma pigmentation is caused due to a group of closely related abnormalities inMismatch repairBase excision repairNucleotide excision rapairSOS repair  <response>: Autosomal recessive conditionThere are seven xeroderma pigmentosum genes necessary for NER mechanism in humans Mutation in any of them lead to the condition XPRef: DM VASUDEVAN 7th edition, page no: 584 