Our genetic DNA is 98% the same. That is an inescapable fact. It is also true that the DNA of a chimp and a human are more similar to each other than either is to a gorilla.
Well, previously you were saying that nothing in science can be proved (not even that the earth goes around the sun) and here you are talking about "inescapable" facts. Let me guess, this is an unprovable inescapable fact, no?