Fly embryos and frog embryos differ from each other more than frog embryos and ape embryos do. I believe this implies that flies and frogs diverged further away from each other in evolution than frogs and apes did, hence apes and frogs are more closely related than flies and frogs. Embryology is one of the evidences of evolution, an embryo is an unborn animal or human young in its earliest phases. Embryos of many different kinds of animals; mammals, birds, reptiles, fish,etc. look very similar and is often to tell them apart, which shows a common ancestry.
