Comparative genomics analysis of R. microplus genes using Blast Score Ratio. The BLAST score ratio (BSR) approach  was adopted to compare the predicted BmiGI genes to other genomes. The quadrant A (orange) represents genes present only in R. microplus while genes in quadrant B (green) are most similar to the genome on the y axis. Genes in quadrant C (red) are equally similar to both genomes, and genes in quadrant D (blue) are most similar to genomes on the x axis. The comparisons have been performed using three different genomes on the x axis, C. elegans (a), A. gambiae (b) and H. sapiens (c) against D. melanogaster on the y axis.