Biology · Evolution
Assertion (A): The appearance of new drug-resistant bacterial strains within days or months is an example of evolution by natural selection. Reason (R): Heritable variations that enable survival under altered environmental conditions (like the presence of antibiotics) are selected naturally. In light of the statements above, choose the correct option:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both A and R are true and R is the correct explanation of A✓
- 2Both A and R are true but R is not the correct explanation of A
- 3A is true but R is false
- 4A is false but R is true
Correct answer
Both A and R are true and R is the correct explanation of A
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