Genome denovo assembly using velvet

Velvet is denovo assembler suitable for small genomes. It is based on deBruijn graph andwe must define kmer length when using it.

In practice you should try several assemblies with different values and see which gives best results. Typically larger value of k will give longer contigs, but only if there are enough reads. There is a relation between read depth and optimal k value, and this balance we must be found empirically.