Figure 5.

Distribution of Nonreference SNPs in Laboratory Strains and CC-2290 (S1 D2) on 17 Chlamydomonas Chromosomes.

Regions of identity-by-descent between laboratory strains and CC-503/CC-125 are found intermittently with regions of divergence. CC-2290 is approximately uniformly diverged from CC-503 genome-wide. Chromosomal boundaries are indicated by vertical gray lines. Nonreference SNP counts are based on 25-kb nonoverlapping windows. Gene deletions (red) relative to CC-503 and “damaging” nonsense mutations (green) are represented as points above the nonreference SNP counts, showing that most mutations in these classes occur in the regions that are polymorphic in the laboratory reference strains.