“…Given the functional importance of OXPHOS, variations in these genes can directly influence metabolic performance (Escalona, Weadick, & Antunes, 2017;da Fonseca, Johnson, O'Brien, Ramos, & Antunes, 2008;Hood et al, 2018;Li et al, 2017;Scott, Guo, & Dawson, 2018). Four complexes (I, III, IV, and V) have subunits encoded by genes in both the nuclear and mitochondrial genomes, whereas one (II) is encoded exclusively in the nuclear genome.…”