Fig. 2
From: Merqury: reference-free quality, completeness, and phasing assessment for genome assemblies
Merqury assembly spectrum plots for evaluating k-mer completeness. K-mers are colored by their presence in the reads and primary/alternate assemblies. a Distinct k-mer assembly spectrum (spectra-asm) plot of both TrioCanu Col and Cvi haplotype assemblies. This plot shows the assembly-specific (red and blue) and shared portion of k-mers (green). b Spectra-asm plot of the FALCON-Unzip assembly. The primary assembly has more k-mers (red) compared to the alternate assembly (blue). c Spectra-asm plot of the Canu assembly which is a mixture of both haplotypes. A small fraction of 1-copy k-mers is found only in the reads (black peak around 12~30×), which represents heterozygous variants missing from the assembly