New species evolve whenever a lineage splits off into several. Because of this, the kinship between species is often described in terms of a 'tree of life,' where every branch constitutes a species.

Mitonuclear discordance refers to the mismatch between evolutionary histories inferred from mitochondrial DNA and those reconstructed from nuclear genomes. This phenomenon arises when mitochondrial ...

Anurans, salamanders and caecilians represent the three major orders of Amphibia, collectively encompassing over 8,000 described species worldwide. Phylogenetic analysis employs molecular, ...