Xeroderma pigmentation is caused due to a group of closely related abnormalities in
Mismatch repair
Base excision repair
Nucleotide excision rapair
SOS repair
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
Metabolism of nucleic acids