Extended Data Fig. 1: Informative and non-informative SNPs.
From: Strainy: phasing and assembly of strain haplotypes from long-read metagenome sequencing
(A) An example of graph multi-phasing challenge with a set of four closely-related strains and their corresponding phylogenetic tree. SNP positions are shown in different shapes, hollow/solid indicate different genotypes. SNP1 is not informative for the highlighted subset of strains (S2, S3, S4), but SNP2 and SNP3 positions are informative for this subset (B) An example of sequence graph phasing with three strains. Strain-specific variants are shown with yellow rectangles. After phasing and graph simplification, most of the graph nodes are strain-resolved, but some nodes remain strain-collapsed.
