SAQ : Define neo-Lamarckism. State about the criticism of Lamarckism



Neo-Lamarckism is a modern revival of Lamarck’s evolutionary ideas, proposing that acquired characteristics can be inherited, and environmental influences play a significant role in driving evolutionary changes.

Criticism of Lamarckism includes:

  1. Lack of Evidence: There is limited empirical evidence supporting the inheritance of acquired characteristics.
  2. Mechanism of Inheritance: Lamarck did not provide a clear mechanism for how acquired traits are passed on to the next generation.
  3. Contradictory Examples: Some examples cited by Lamarck, like the giraffe’s neck, have alternative explanations through natural selection.
  4. Modern Genetics: Neo-Darwinism and the discovery of genetics largely invalidated Lamarck’s ideas.

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