Genomic landscape of CHO contigs. CHO consensus sequences for A) DHFR and B) Alppl2 genes aligned to mouse reference chromosomes. Grey bars represent nucleotides identical to the reference sequence and red bars represent both nucleotides that differ from the reference sequence and gaps in the consensus sequences. CHO contigs aligned to an Alppl2 exon (highlighted in green in B) shown at the C) chromosome and D) nucleotide level. Red nucleotides indicate differences between the CHO consensus and reference sequences. Consensus sequences aligned to the mouse reference genome using BLAT  at the UCSC Genome Browser .