Comparing Laws to Theory is like comparing apples to a human being. Laws are proven, they have significant support, such as the earth is not flat. Theorem have yet to be proven as facts and do need evidence to support them, if it is still a theory it has yet to be decided as truth or not.

For the law of gravity, I could drop an object and see it fall, I can also see that the moon rotates around our earth and all nine planets around the sun, and even if that was inconclusive enough, I could get pictures that prove they have been rotating and that a force was keeping them there.

For genetics I could find evidence linking specific genes to certain actions, appearances, etc. to conclude that genetics determines how a living thing is composed.

Yes, I need evidence for evolution, simply saying that there is evidence doesn't create evidence. Using evolution as an excuse doesn't work either.