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BIO NMDCAT Lamarckism
nmdcat.online July 14, 2026

During a lab demonstration, a student grafts a segment of DNA coding for insulin into a bacterium. The bacterium then passes this trait to its offspring. Does this support Lamarckism?

A. Yes, because the bacterium acquired a trait and passed it to its offspring.
B. No, because this is an artificial genetic modification involving DNA, not a somatic change driven by environmental "besoin."
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C. Yes, because the environment forced the bacterium to absorb the DNA.
D. No, because bacteria do not belong to the evolutionary domain.

📝 Explanation

Genetic engineering alters the genome directly. Lamarckism refers to somatic phenotypic changes (like organ use/disuse) being converted into heritable genetic info, which does not happen here.

📖 Additional Information

  • Yes, because the bacterium acquired a trait and passed it to its offspring.
  • No, because this is an artificial genetic modification involving DNA, not a somatic change driven by environmental "besoin."
  • Yes, because the environment forced the bacterium to absorb the DNA.
  • No, because bacteria do not belong to the evolutionary domain.

Genetic engineering alters the genome directly. Lamarckism refers to somatic phenotypic changes (like organ use/disuse) being converted into heritable genetic info, which does not happen here.

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