Question

what is most useful for constructing a phylogenetic tree

Answer 1

Answer:

A tool that has revolutionized, and continues to revolutionize, phylogenetic analysis is DNA sequencing. With DNA sequencing, rather than using physical or behavioral features of organisms to build trees, we can instead compare the sequences of their orthologous (evolutionarily related) genes or proteins.

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Answer 2

A phylogenetic tree or evolutionary tree is a branching diagram or "tree" showing the evolutionary relationships among various biological species

node with descendants is most useful for construction of phylogenetic tree.

and second most important thing for construction of phylogenetic tree is

DNA sequencing and physical features of organism.

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