mismatch repair involved in maintenance of fidelity involved in DNA-dependent DNA replication ribonucleotide excision repair al 2014-10-14T12:24:37Z The pathway by which a ribonucleotide is removed from DNA and replaced by a deoxyribonucleotide. The ribonucleotide is incised by RNase H2, and further excised by an endonuclease. The resulting 1 nt gap is then repaired by DNA polymerase and DNA ligase. biological_process GO:1990516