Scaffolds located in pericentromeric regions on A. gambiae chromosomes. Black and red lines and arrows on the left side of the picture correspond to the scaffolds previously and newly mapped to the pericentromeric regions of chromosomes (a) X, (b) 2 and (c) 3, respectively; blue arrows indicate newly oriented scaffolds. The dots on the arrows show the beginning of the scaffolds and the arrowheads correspond to the end of the scaffolds. The scaffolds are identified by the last four digits of the scaffold ID. The scale on the left side of the chromosomes indicates divisions and subdivisions in these regions. Black arrows on the right side of the picture show the location of the PCR amplified gene-fragments and BAC and cDNA clones.