The Genome Sequence of Caenorhabditis briggsae: A Platform for Comparative Genomics
C. elegans is shown in white background and C. briggsae in light blue background. The arrows indicate regions of C. elegans-specific expansion of the family. The inset shows a schematic of the region of C. elegans chromosome I corresponding to the sra expansion in the upper right of the tree. C. briggsae genes are named using the prefix CBG, while C. elegans genes are numbered consecutively across the cosmid on which they were first identified. The root of this tree is arbitrary.