Figure 2
From: Reference-free SNP detection: dealing with the data deluge
Bubble structures formed in De Bruijn graphs by SNPs. Bubble structures form as the result of a divergence in sequence by one nucleotide, initially at the end of a k-mer, that then moves backwards at each progressive node, allowing for a close of the two paths at the end. Colouring the edges in the graph according to sample provenance helps identify inter-sample SNPs.