Fig. 6.

Phylogenetic tree of 114 mammals from nine phylogenetic orders (Kumar et al. 2017). Carriers of the common histidine (H) amino acid are in blue, whereas the carries of the glutamine (Q) variant are in red (cattle has both blue and red indicating the Yakut cattle specific H100Q mutation); the outer circle in orange highlights species that either hibernate or enter torpor (supplementary information 15, Supplementary Material online). Images are representative of the species that have the glutamine variant, Yakut cattle (glutamine/histidine) and Kholmogory cattle (histidine).