A phylogeny can be used to make predictions about the origin and maintenance of the behaviors by tracing the ancestral history of an organism even at the genetic level and even the prediction about future could be made.
Phylogeny is the diagrammatic depiction of the evolutionary and ancestral roots of an individual or a group of species, or of different species. This is done by establishing relations by making lines and connecting them to show the describe the connection.
Ancestral history is the roots and descent of the an individual. It depicts the fathers and fore-fathers of an individual and also its distant relatives.
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