NEET Sample Paper NEET Sample Test Paper-50

  • question_answer In the developmental history of mammalian heart, it is observed that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stage. To which hypothesis can this above cited statement be approximated?

    A) Lamarck?s principle

    B) Mendelian principle

    C) Biogenetic law

    D) Hardy Weinberg law

    Correct Answer: C

    Solution :

    Biogenetic law or Recapitulation theory was given by Ernst Haeckel in 1866. It states that ontogeny repeats phylogeny?. Ontogeny is the life history of an organism while phylogeny is the evolutionary history of the race of that organism. This means that an organism repeats its ancestral history during its development.


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