Theories of evolution || Lamarckism || Evolution || B. Sc. & M. Sc. Zoology

Theories of evolution
Lamarckism or Theory of inheritance of acquired characters.
Darwinism or Theory of natural selection.
Mutation theory of De Vries.
Neo-Darwinism or Modern concept or Synthetic theory of evolution.

Lamarckism or Theory of inheritance of acquired characters.
Jean Baptiste de Lamarck in his famous book "Philosphic Zoologique".

This theory is based on the inheritance of acquired characters which are defined as the changes (variations) developed in the body of an organism from normal characters, in response to the changes in environment, or in the functioning of use and disuse) of organs, in their own lifetime.
Postulates of Lamarckism
New needs
Use and disuse of organs
Inheritance of acquired characters
Speciation

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