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High Functional Diversity in Mycobacterium tuberculosis Driven by Genetic Drift and Human Demography

Figure 2

Frequency of Pairwise Genetic Distances Among 108 Strains of the MTBC

Pairwise comparisons of genetic distances between human-adapted strains are indicated in yellow, those between animal-adapted strains in blue, and those between human- and animal-adapted strains in red. For better illustration, the frequencies of genetic distances in the animal-to-animal strain comparisons and the animal-to-human strain comparisons were multiplied by 20 and 3, respectively. However, for the statistical analysis (see main text), the actual frequencies were used.

Figure 2

doi: https://doi.org/10.1371/journal.pbio.0060311.g002