Fig. 3
Pairwise mismatch distributions based on the combined data of the COI and Cytb genes for three derived regions. The x coordinate represents the number of pairwise differences among sequences, and the y coordinate represents the frequencies of pairwise differences in each region. The significance values (P) of the parameters were evaluated with 1000 simulations; PSSD: P value for SSD (sum of squared deviations) PR: P value for Rag (Harpending’s raggedness index); τ: the index of population expansion