Lamarkian model of evolution

This model of evolution assumes that the adaptive traits of modern organisms are formed in that the members of a certain species begin to devote themselves to certain activities, for example, they reach the tops of trees for leaves, in this “exercise” they lengthen their necks and their offspring then inherit these prolonged necks. It cannot now be determined whether Lamarck really had such a naïve idea, he did not state things so explicitly in his work “Philosophia Zoologica”. That is, however, not important today – Lamarckism is now understood as the formation of adaptive traits through the relevant “exercising” and subsequent inheritance of these acquired properties.

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The classical Darwinian theory of evolution can explain the evolution of adaptive traits only in asexual organisms. The frozen plasticity theory is much more general: It can also explain the origin and evolution of adaptive traits in both asexual and sexual organisms Read more