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nmdcat.online July 14, 2026

What is the primary role of the environment in Charles Darwin’s theory compared to Lamarck’s theory?

A. In Darwinism, environment acts as a selective agent; in Lamarckism, it acts as an active inducer of specific phenotypic variations.
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B. In Darwinism, environment induces mutations; in Lamarckism, it has no effect.
C. Both theories state that the environment directly changes the genetic sequence of germ cells.
D. In Darwinism, environment has no role; in Lamarckism, it is the sole factor.

📝 Explanation

In Lamarckism, the environment forces the organism to change its physiology/behavior. In Darwinism, the environment simply "selects" which pre-existing variations survive.

📖 Additional Information

  • In Darwinism, environment acts as a selective agent; in Lamarckism, it acts as an active inducer of specific phenotypic variations.
  • In Darwinism, environment induces mutations; in Lamarckism, it has no effect.
  • Both theories state that the environment directly changes the genetic sequence of germ cells.
  • In Darwinism, environment has no role; in Lamarckism, it is the sole factor.

In Lamarckism, the environment forces the organism to change its physiology/behavior. In Darwinism, the environment simply "selects" which pre-existing variations survive.

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