Assembly

Ciona intestinalis
Photo: www.ascidians.com

Ciona intestinalis version 2.0 [details] is a whole genome shotgun assembly released by the JGI. The Ciona intestinalis genome is the smallest of any experimentally manipulable chordate, and thus provides a good system for exploring vertebrate evolutionary origins. This Ensembl website presents the sequence data provided by the JGI, with additional Ensembl genebuild (see below).

The assembly release version 2.0 of the whole genome shotgun reads was constructed with the JAZZ assembly, using paired end sequencing reads. Starting with a coverage of 11x, additional data--including BAC and FISH markers--were used to map scaffolds to chromosome arms. The current size of the assembly (which includes unmapped scaffolds) is 173Mb, with 94Mb of the assembly mapped to chromosome arms.