No, the theory of evolution cannot become a scientific law because theories can be proven or rejected if not, it can be improved or modified over time.
Whereas Scientific law cannot be rejected or disprove as it is universal truth.
So, Theories can be refined and improved over time, but cannot become scientific laws.
Each branch point on the cladogram represents where species split off into new ones. The node represents the last point at which 2 new species shared a common ancestor.