Nucleotide diversity plotted against chromosome division in An. gambiae (average of M- and S-form pools); with bars showing the number of loci sequenced in each chromosome division. Approximate positions of centromeres are marked by arrows. Note the upper plot is scaled to reflect the lower effective population size (3/4) of the X chromosome.
Wilding et al. BMC Genomics 2009 10:320 doi:10.1186/1471-2164-10-320