representing a common ancestor between two or more species as depicted on a phylogenetic tree.

Branch points literally are , i.e., the point in time at which two gene pools separated and thus became free to .

Likely reflecting the reality of most specification events, branch points typically are depicted as a splitting of a single lineage into two diverging lineages, that is, rather than more than two lineages splitting off from each other at a given point in time.

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