Question

in a cladogram, when does a group of organisms branch off?
○ when a new trait evolves
○ when an ancestor becomes extinct
○ when it is discovered
○ when it becomes large enough

Explanation:

A cladogram shows evolutionary relationships. Organisms branch off when a new trait (derived characteristic) evolves, distinguishing them from the ancestral group. Ancestor extinction, discovery, or population size don't drive branching; it's about new traits.

Answer:

A. when a new trait evolves