A) resemble the bases found in DNA. B) can lead to frameshift mutations. C) change the structure of DNA bases. D) cause single-nucleotide substitution mutations. E) cause mutations by binding to the DNA polymerase.
A) is easily avoidable. B) can cause the formation of free radicals. C) is entirely from exposure to natural background radiation. D) repairs mistakes made during DNA replication. E) for the average American is mainly due to dental x-rays.