The faithful duplication and repair exhibited by the double-stranded DNA structure would seem to be incompatible with the process of evolution. Thus, evolution has been explained by the occurrence of "errors" during DNA replication and repair.
Resource: Shibata, T., Nishinaka, T., Mikawa, T., Aihara, H., Kurumizaka, H., Yokoyama, S. & Ito, Y. Proc. Natl. Acad. Sci. U.S.A. 98(15) 8425-8432 (2001)