This page discusses the similarities in vertebrate embryonic development, particularly during the pharyngula stage, where key structures appear. It introduces the recapitulation theory, which posits t...This page discusses the similarities in vertebrate embryonic development, particularly during the pharyngula stage, where key structures appear. It introduces the recapitulation theory, which posits that early developmental stages mirror ancestral forms, despite variations among species. The page notes that while embryos exhibit analogous features like limb bud formation, many are lost or altered later.
