Comparison of P. contorta contigs to orthologous A. thaliana coding sequences. A. The ratio of P. contorta contig length to A. thaliana ortholog length as a function of contig coverage depth. The dotted line corresponds to a ratio of one, where 454 contigs are as long or longer than the BLAST matched A. thaliana orthologs. The contour lines on both plots correspond to the density of points in the plot. B. Total percent of A. thaliana ortholog coding sequence that was covered by all P. contorta contigs, as a function of the length of the A. thaliana coding sequence.