GATE 2024 CY – Question 6
Thousands of years ago, some people began dairy farming. This coincided with a number of mutations in a particular gene that resulted in these people developing the ability to digest dairy milk.
Based on the given passage, which of the following can be inferred?
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Show answer and explanation
Correct answer: (D) In human beings, digestion of dairy milk resulted from a mutated gene.
Explanation
The passage states that dairy farming began thousands of years ago, and that **at the same time** mutations occurred in a gene, which gave those people the ability to digest milk.
- **A. All human beings can digest dairy milk.** The passage speaks only about "these people". ✗
- **B. No human being can digest dairy milk.** Contradicts the passage. ✗
- **C. Digesting dairy milk is essential for human beings.** Nothing in the passage says it is essential. ✗
- **D. In human beings, the digestion of dairy milk resulted from a mutated gene.** The passage says the ability arose together with mutations in a gene. ✓
Answer **D**.