why-is-it-important-to-include-an-outgroup-when-constructing-a-phylogenetic-tree

Question

Why is it important to include an outgroup when constructing a phylogenetic tree?

Accepted Answer

To provide a reference point for determining the direction of trait evolution.

Answer

To identify which species are most closely related.

Answer

To ensure that all possible evolutionary paths are considered.

Answer

To verify the age of the lineage.