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(A) The statement 'Ontogeny repeats phylogeny' is known as the Biogenetic Law or Recapitulation Theory,proposed by Ernst Haeckel. It suggests that the

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Biogenetic Law proposed by Ernst Haeckel

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(A) The statement 'Ontogeny repeats phylogeny' is known as the Biogenetic Law or Recapitulation Theory,proposed by Ernst Haeckel. It suggests that the embryonic development of an individual organism (ontogeny) reflects the evolutionary history of its species (phylogeny). For example,all vertebrate embryos,including humans,develop vestigial gill slits behind the head during early embryonic stages,which are functional only in fish but disappear or transform in other adult vertebrates. This provides embryological evidence for common ancestry among vertebrates.

Provide the scientific reason for the statement: 'Ontogeny repeats phylogeny'.

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