Figure 3From: Independent Origins of New Sex-Linked Chromosomes in the melanica and robusta Species Groups of DrosophilaSaturation on third codon positions. Comparison between ML distance (X axis) and uncorrected distances for third codon positions (Y axis) estimated from: a) CoI, b) CoII, c) cac, and d) sc sequences. Transitions and transversions distances within ingroup and between ingroup-outgroup are labeled. Dotted lines correspond to regression lines fitted to transitions and solid lines for transversions.Back to article page