The DNA codes for spatial arrangements of cells in the form of functional bio-structures. A heart valve is one such arrangement, while the ear is another. In between you have a nearly infinite number of junk arrangements. You can't just wave a magic wand of mutations and jump from one bio-functional arrangement of cells to another, and than claim - natural selection did it!
But mutations often do get us from one functioning organism to another. These mutations are of course not
caused by natural selection, but they are preserved by it.