Figure 3
Distribution of TAS across bacterial and archaeal taxa. Black: TAS absent in the taxon while random expectation is significantly non-zero. Dark gray: TAS absent in the taxon with random expectation not significantly different from zero. Blue: TAS is significantly underrepresented in a taxon with more than twofold difference from random expectation. Cyan: TAS is significantly underrepresented in a taxon with less than twofold difference from random expectation. Light gray: abundance of a TAS in a taxon does not significantly differ from random expectation. Orange: TAS is significantly overrepresented in a taxon with less than twofold difference from random expectation. Red: TAS is significantly overrepresented in a taxon with more than twofold difference from random expectation. The random expectation estimate is based on the total number of TAS of the given type and the total number of protein-coding genes in the given taxon. The statistical significance was estimated using the χ2 test (critical χ2 value of 3.84 for 1 degree of freedom and p-value of 0.05).