Fig. 6From: Variability of mitochondrial ORFans hints at possible differences in the system of doubly uniparental inheritance of mitochondria among families of freshwater mussels (Bivalvia: Unionida)Unrooted maximum likelihood (ML) trees for F-ORF and M-ORF proteins of freshwater mussels. Color code for each family are indicated inside the panels. Bootstrap values are indicated at each nodeBack to article page