And the chimp that evolves is still a primate. He - or she - is related to the other members of the order Primates, which is also seen in broad areas of conserved genetic sequence. Primates, in turn, resemble other members of the Mammalian. Mammals resemble other tetrapods. Etc. And that genetic similarity much reflects morphological differentiation. And so - macroevolution is inferred. Not every scientific finding comes from observable evidence. When was the last time you saw an electron, or a quark? Have you, personally, spotted a black hole?