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:

Cladograms represent evolutionary relationships. A branch - point occurs when a new trait evolves, separating a group from its ancestral lineage. Ancestor extinction, discovery, or size are not the determining factors for branching in a cladogram.

Answer:

when a new trait evolves