Assertion (A): Stabilizing selection favours individuals with extreme phenotypes in a population. Reason (R): Stabilizing selecti…
Evolution ·Previously asked in JKSSB Veterinary Pharmacist 2025
View the full solved paper: JKSSB Veterinary Pharmacist – 2 March 2025
Question
Assertion (A): Stabilizing selection favours individuals with extreme phenotypes in a population.
Reason (R): Stabilizing selection reduces genetic diversity by selecting for the average phenotype.
- A. Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
- B. Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
- C. Assertion is false, but Reason is true. (Correct answer)
- D. Assertion is true, but Reason is false.
Correct Answer
Option C — Assertion is false, but Reason is true.
Detailed Solution & Explanation
The correct answer is Assertion is false, but Reason is true..
Key Points
- Assertion A is FALSE - Stabilizing selection favours INTERMEDIATE phenotypes and eliminates extremes (opposite of what is stated).
- Reason R is TRUE - stabilizing selection does reduce diversity by selecting for average phenotype.
Topics covered: Natural Selection Stabilizing Selection