Question

The biogenetic law of Haeckel is

• A. Omnis vivam e vivum
• B. Omnis cellula-e cellula
  
• C. Ontogeny repeats phylogeny
• D. Phylogeny repeats ontogony

Answer 1

The correct option is C Ontogeny repeats phylogeny

• Theory of recapitulation states that 'Ontogeny recapitulates (repeats) phylogeny' i.e the development of an organism (ontogeny) expresses all the intermediate forms of its ancestors throughout evolution (phylogeny).
  
• It was proposed by Haeckel in the 19${}^{th}$ century.
• The theory of recapitulation is also called biogenetic law.
• Hence, the biogenetic law of Haeckel is ontogeny repeats phylogeny.
• So, the correct answer is 'Ontogeny repeats phylogeny'.