## Description

This track shows the draft assembly of the $organism genome. To quote from the WormBase README: "This sequence version makes minor modifications to the original Cb1 (cb25.agp8) sequence assembly and uses a genetic map to align the contigs along chromosomes. The Cb1 assembly was produced for the C. briggsae strain AF16 from 2.05 million whole genome shotgun (WGS) reads, of which 88.2% were in read pairs. The sequence reads were generated at Washington University School of Medicine's Genome Sequencing Center and the Sanger Centre (Hinxton, UK). The Phusion (Mullikin, J) assembler was used to assemble the WGS reads into contigs based on overlap information, and then into supercontigs using read pair information to cross gaps. These supercontigs were assembled into mapped ultracontigs based on FPC fingerprint mapping (generated at Washington University School of Medicine's Genome Sequencing Center), with material from previously finished clones used to bridge gaps. Using the sequence data to identify SNPs between AF16 and HK104 and to distribute primers along major ultracontigs, a genetic map (Ray Miller, Washington University School of Medicine) was constructed using recombinant inbred lines (Scott E. Baird, Wright State University) which yielded 6 chromosomes. The genetic mapping data along with underlying read pairing data were used to break several misassemblies in ultracontigs and to order and orient the sequences along the C. briggsae chromosomes to create the Cb3 release."

In dense mode, this track depicts the ultracontigs that make up the currently viewed chromosome. Ultracontig boundaries are distinguished by the use of alternating gold and brown coloration. There are 100 base gaps between ultracontigs.

All components within this track are of fragment type "W": Whole Genome Shotgun contig.

## Credits

The Jan. 2007 Caenorhabditis briggsae draft assembly produced by the Washington University School of Medicine GSC with the following data usage policy.