Question

multiple choice question
a(n) ____ tree is more difficult to develop but shows an evolutionary path from a common ancestor. a(n) ____ tree represents phylogenetic relationships but no outgroup and therefore no common ancestor.

unrooted/rooted
rooted/unrooted

Explanation:

A rooted phylogenetic tree defines a common ancestor and evolutionary paths (is harder to construct as it requires defining the root). An unrooted tree only shows relationships between organisms, with no defined outgroup or common ancestor.

Answer:

rooted/unrooted