Natural selection in which more individuals acquire peripheral character value at both the ends of the distribution curve is

Options

A. Stabilising natural selection
B. Disruptive natural selections
C. Directional natural selection
D. The curve never shows the formation of two peaks

Answer

To solve the question regarding the type of natural selection where more individuals acquire peripheral character values at both ends of the distribution curve, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Natural Selection Types**:
- Natural selection can be categorized into three main types: stabilizing selection, disruptive selection, and directional selection. Each type affects the distribution of phenotypic traits in different ways.

2. **Analyze Stabilizing Selection**:
- In stabilizing selection, individuals with extreme phenotypic traits (those at the ends of the distribution curve) are eliminated, while those with intermediate traits are favored. This results in a narrower distribution curve centered around the optimal trait value.

3. **Analyze Directional Selection**:
- Directional selection favors one extreme phenotype over others, causing the population's traits to shift in one direction. This results in a distribution curve that moves towards one end but does not favor both extremes.

4. **Analyze Disruptive Selection**:
- Disruptive selection favors individuals at both extremes of the phenotypic range, leading to a distribution curve that can have two peaks (bimodal distribution). This means that individuals with peripheral character values at both ends are more likely to survive and reproduce.

5. **Evaluate the Options**:
- The question specifically asks for the type of natural selection where more individuals acquire peripheral character values at both ends of the distribution curve. Based on the analysis:
- **Stabilizing Selection**: Not the answer (favors intermediate traits).
- **Directional Selection**: Not the answer (favors one extreme).
- **Disruptive Selection**: This is the correct answer (favors both extremes).
- **Curve never shows formation of two peaks**: Incorrect, as disruptive selection can show two peaks.

6. **Conclusion**:
- The correct answer to the question is **disruptive natural selection** (Option 2).