FIGURE LEGEND
Figure 1. An illustration of rapid evolution of divergent mitochondrial genotypes between allopatric daughter populations via genetic hitchhiking. Blue rings represent the mitochondrial genome of an individual in a population. Yellow dots represent functionally neutral changes to the nucleotide sequence. Green bars represent functional changes that bestow a benefit and that are subject to positive selection. Selection on the beneficial alleles leads to the fixation of those beneficial alleles along with any neutral traits that happen to be linked to them while at the same time purging the population of genetic variants.