The school of systematics emphasizes the recency of divergence from the common ancestor as shown by branching patterns:-
a. evolutionary taxonomy
b. cladistics
Cladistics and phenetics are both used in the taxonomy method known as evolutionary classification. Phenetics categories organisms based on their physical traits, whereas cladistics only considers ancestor-progenitor ties.
According to the taxonomy known as cladistics, organisms are grouped into clades (groups) based on shared traits and ancestry. Cladistics is a method for categorizing species and determining their evolutionary relationships.
Start by visualizing a primordial eukaryote at the tree's base. One node on the evolutionary tree branched out into aquatic vertebrates like jawless fish when the common ancestor changed. The branch split into tetrapod's with four legs at the subsequent node.
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