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BIO NMDCAT Lamarckism
nmdcat.online July 14, 2026

In Lamarckian terms, if a deer-like animal continuously runs fast to escape predators, what will happen to its limbs and those of its future offspring?

A. Its limbs will weaken due to exhaustion, leading to shorter limbs in offspring.
B. Its limbs will become longer and more muscular, and its offspring will be born with longer, stronger limbs.
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C. The running action will trigger mutations in the egg cells of the running deer.
D. The limbs will remain unchanged, but its cardiovascular capacity will decrease.

📝 Explanation

Under the use and disuse principle, frequent running strengthens and elongates the limbs, and under the inheritance of acquired characters, this trait is passed down.

📖 Additional Information

  • Its limbs will weaken due to exhaustion, leading to shorter limbs in offspring.
  • Its limbs will become longer and more muscular, and its offspring will be born with longer, stronger limbs.
  • The running action will trigger mutations in the egg cells of the running deer.
  • The limbs will remain unchanged, but its cardiovascular capacity will decrease.

Under the use and disuse principle, frequent running strengthens and elongates the limbs, and under the inheritance of acquired characters, this trait is passed down.

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