Fig. 2From: Molecular evolutionary rates are not correlated with temperature and latitude in Squamata: an exception to the metabolic theory of ecology?Relationships between branch lengths, temperature and latitude. a Major axis regressions drawn between the branch length of the warmer and the cooler species of the species pair. b Distribution of the lower (black) and the upper (white) boundaries of the confidence interval for the 1,000 major axis regressions presented in (a). c Major axis regressions drawn between the standardized difference of branch lengths and the difference of absolute latitude in the species pair. d Distribution of the lower (black) and the upper (white) boundaries of the confidence interval for the 1,000 major axis regressions presented in (c). In a and c grey lines represent the 95 % of the slopes of 1,000 relationships. Solid lines represent the median slope of the 1,000 relationships and dashed lines were the reference slopes (slope = 1 for (a) and (b), and slope = 0 for (c) and (d)), respectivelyBack to article page