Figure 6. Nonsynonymous to synonymous ratios along the chromosome arms in w1118; iso-2; iso-3. (A) Left, Nonsynonymous SNPs at 1 Mbp intervals along the 2L chromosome arm (black) and synonymous SNPs (gray). Right, N/S ratios (NS/Syn) along the chromosome arms. Notice that N/S ratios are higher near the centromere and telomere (see text). (B-F) as in (A), but for chromosome arms 2R, 3L, 3R, 4 and X.