Summary of polymorphism in <i>Wolbachia</i> and mitochondrial genomes in the DGRP sample.

<p><i>N</i> is the number of strains, <i>L</i> is the number of sites analyzed, and <i>S</i> is the number of variable sites. Estimates of π and θ (per site) are based on the number of mutations. All Tajima's <i>D</i> tests had <i>P</i><0.01 based on 10,000 coalescent simulations that assumed no recombination and were conditioned on the number of variable sites.