Fig. 4From: Population genomics reveals that an anthropophilic population of Aedes aegypti mosquitoes in West Africa recently gave rise to American and Asian populations of this major disease vectorHistorical relationships between Ae. aegypti populations. a Neighbour-joining tree of Ae. aegypti exome sequences from five populations. The tree is rooted with the sequence of Ae. bromeliae. Branches leading to samples from different populations are colour-coded. The scale is genetic distance (D xy ). b Relationships between populations. The branch lengths are proportional to the amount of genetic drift that has occurred. The scale bar shows ten times the average standard error of the entries in the sample covariance matrix. The numbers on branches are percent bootstrap support calculated by resampling blocks of 100 SNPs. The population tree was reconstructed using allele frequency data using the TreeMix program [37]. Both panels use all sites in our datasetBack to article page