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Set 3: Command of Evidence (Intermediate)

Explanation

Answer: C

PASSAGE

Epigenetics studies how behaviors and environment can cause changes that affect the way genes work. Unlike genetic mutations, epigenetic changes are reversible and do not change DNA sequence. However, they can be passed to offspring, influencing gene expression across generations.

What is a key difference between epigenetic changes and genetic mutations?

A. Epigenetic changes alter the DNA sequence.
B. Epigenetic changes are reversible and don't change the DNA sequence.
C. Genetic mutations are caused by lifestyle.✓ Correct
D. Epigenetic changes cannot be inherited.

Detailed Explanation

The text explicitly contrasts: 'Unlike genetic mutations, epigenetic changes are reversible and do not change DNA sequence. '

Key Evidence:

• "reversible and do not change DNA sequence"

Why others are wrong: A (They explicitly do NOT change sequence.), C (Epigenetic changes, not mutations, are linked to behaviors/environment.), D (They CAN 'be passed to offspring.').

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