Mutation rates. (A–C) Type-specific base-substitution rates, by strain. (D–F) Size-specific indel rates, by strain. (A,D) Genome-wide mutation rates; (B,E) rates at nonmononucleotide repeat sequence; (C,F) mononucleotide repeat sequence. All rates are scaled as 10⁻⁹ per base per generation; note the difference in y-axis scale between panels A–C and panels D–F. Error bars, one SEM.