When selection acts to eliminate both extremes from an array of phenotypes, the frequency of intermediate type, which is already present in more, gets increased. This type of selection is called

Options

A. A.Disruptive selection
B. B.Balancing selection
C. C.Stabilizing selection
D. D.Non- directional selection

Answer

**Step-by-Step Solution:**

1. **Understanding Selection in Evolution**: Selection is a process in evolution where certain traits become more or less common in a population based on their impact on survival and reproduction.

2. **Identifying Types of Selection**: There are three main types of natural selection:
- **Stabilizing Selection**: Favors the intermediate phenotypes and eliminates extremes.
- **Directional Selection**: Favors one extreme phenotype over others.
- **Disruptive Selection**: Favors both extreme phenotypes over the intermediate phenotype.

3. **Analyzing the Given Scenario**: The question describes a situation where selection eliminates both extremes from an array of phenotypes, leading to an increase in the frequency of the intermediate type.

4. **Matching the Scenario to Selection Types**:
- In **stabilizing selection**, the intermediate phenotypes are favored, and the extremes are selected against. This leads to an increase in the frequency of the intermediate type.
- In **directional selection**, one extreme is favored, which does not match the scenario.
- In **disruptive selection**, the extremes are favored, which also does not match.

5. **Conclusion**: Based on the analysis, the type of selection that acts to eliminate both extremes and increases the frequency of the intermediate type is called **Stabilizing Selection**.

**Final Answer**: Stabilizing Selection

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