  Phylogeny can be inferred using two sources of data from an organism:
morphological data and molecular data. Historically, phylogenies were usually
inferred using morphological characters, but some morphological features may
not necessarily indicate shared heritage. With the introduction of molecular
phylogenies, the base sequence of genes, or amino acid sequence of proteins can
be compared to find the number of similarities or differences to ascertain
levels of relatedness between species. These two types of phylogenies are to be
taken as a data-driven hypothesis about the evolutionary history of the studied
organisms, and a consensus is drawn from the comparison between the different
phylogenies built from the two sources of data, utilizing different methods.
