The similarities of vertebrate embryos can be explained by

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The similarities of vertebrate embryos can best be explained by descent from a common ancestor. This is because all vertebrates are believed to have evolved from a common ancestor, and therefore share many common features, including the similarities seen in their embryonic development. Species homology, analogous structures, and vestigial structures may also provide evidence of common ancestry, but they are not the best explanation for the similarities seen in vertebrate embryos.

The Similarities of Vertebrate Embryos Can Be Explained by