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nmdcat.online July 14, 2026

Which of the following examples was NOT used by Lamarck or early proponents to support the theory of use and disuse?

A. The webbed feet of aquatic birds like ducks
B. The long legs of wading birds like herons
C. The colorful plumage of male peacocks used in courtship
✓
D. The absence of limbs in modern snakes

📝 Explanation

The colorful plumage of male peacocks is a product of sexual selection (Darwinian concept). Lamarck focused on physical adaptations gained through use (webbed feet, long wading legs) or disuse (limbless snakes).

📖 Additional Information

  • The webbed feet of aquatic birds like ducks
  • The long legs of wading birds like herons
  • The colorful plumage of male peacocks used in courtship
  • The absence of limbs in modern snakes

The colorful plumage of male peacocks is a product of sexual selection (Darwinian concept). Lamarck focused on physical adaptations gained through use (webbed feet, long wading legs) or disuse (limbless snakes).

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