I think its B but can someone help explain? thanks in advance!! will mark brainliest :) Cladograms represent hypotheses of relatedness based on evidence. When cladograms are constructed from molecular evidence, scientists must examine genes to determine placement. What key factor should scientists look for when determining relatedness between species using this type of evidence?

Biochemical pathways
Mutations to homologous genes
The pattern of embryological development
Morphology