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In page Caenorhabditis elegans:

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C. elegans was the first multicellular organism to have its whole genome sequenced. The sequence was published in 1998,[2] although some small gaps were present; the last gap was finished by October 2002.[citation needed] In the run up to the whole genome the C. elegans Sequencing Consortium/C. elegans Genome Project released several partial scans including Wilson et al. 1994.[3][4][5]