How molecular phylogeny repeats ontogeny ?
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☑ . The biogenetic law is otherwise called the 'theory of recapitulation' which states that ontogeny (development history) recapitulates (repeats) phylogeny (ancestral history). This conclusion is based on the comparative study of the embryos of related groups of animals.
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Recapitulation theory or biogenetic law was given by Ernst Haeckel. It states that an animal during its development (ontogeny) repeats certain ancestral stages of its evolution (phylogeny). Frog has a fish-like tadpole larva with gills and tail. This stage shows that frog has evolved from a fish-like ancestor.
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