BIO NMDCAT Lamarckism

nmdcat.online July 14, 2026

Which of the following concepts is central to Darwin’s theory of evolution but completely absent from Lamarck’s evolutionary framework?

A. Speciation over long periods of time

B. Environmental influence on organisms

C. Natural selection acting on pre-existing variations

✓

D. The concept of gradual modification

📝 Explanation

While Lamarck recognized adaptation to the environment, he did not propose natural selection (survival of the fittest based on pre-existing genetic variations) as the mechanism.

📖 Additional Information

Speciation over long periods of time
Environmental influence on organisms
Natural selection acting on pre-existing variations
The concept of gradual modification

While Lamarck recognized adaptation to the environment, he did not propose natural selection (survival of the fittest based on pre-existing genetic variations) as the mechanism.

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