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Table 2 Top 20 models for protein-coding genes ordered by their minimal AIC score (out of Poisson and NB AIC scores). Each categorical variable obtains one of the following signs: , and that mark partitioning, inclusion as an explanatory variable and omitting the variable correspondingly. The value “All” in the response column means all substitutions were modeled together in these top models (and not separately for transitions/transversions and synonymous/non-synonymous substitutions

From: Big data analysis of human mitochondrial DNA substitution models: a regression approach