The mammalian phylogenetic tree template is based on morphological evidence, whereas the right-hand one is based on genetic evidence. Although the two trees are similar, they are not identical. Try to figure out how many ways these two cladograms differ. One of the most difficult aspects of phylogenetic systematics is this. The "true" evolutionary tree has been lost in the distant past, and scientists can only look for evidence to support the best evolutionary hypothesis. Different data sets do not always produce the same results. It should be noted that phylogenetic trees are extremely useful because they provide a historical narrative for explaining the similarities and differences between the entities placed on the tree. Go ahead and start using EdrawMax to create phylogenetic trees for your class.