True statement regarding base excision repair is ?: (A) Used only for the bases which are deaminated, (B) Uses enzyme called as DNA glycosylase which generate abasic suger site, (C) Removes about 10 – 15 nucleotide, (D) Recognizes a bulk lesion
Answer is B. - This is the first step of base excision repair. Bases modified by deamination, methylation, or by other chemical modification are removed by this kind of repair system.