The ………. shows adaptive radiation resulting from competition for food in a population.

Options

A. Sickle cell anaemia
B. Peppered moth of England
C. DDT resistant mosquitoes
D. Darwin finches

Answer

To solve the question, we need to identify which of the provided examples illustrates adaptive radiation resulting from competition for food in a population.

### Step-by-Step Solution:

1. **Understand Adaptive Radiation**:
- Adaptive radiation is the process where organisms diversify rapidly into a variety of forms to adapt to different environments or niches, often following a change in the environment or the availability of resources.

2. **Analyze the Options**:
- **Sickle Cell Anemia**: This is a genetic disorder caused by a mutation in the hemoglobin gene. It does not illustrate adaptive radiation but rather a specific genetic condition.
- **Peppered Moth**: This example is related to natural selection, specifically directional selection, where the coloration of the moths changed due to pollution. It does not demonstrate adaptive radiation.
- **DTT Resistant Mosquitoes**: This is another example of natural selection, where mosquitoes developed resistance to DDT. It is also a case of directional selection, not adaptive radiation.
- **Darwin’s Finches**: These birds are a classic example of adaptive radiation. Darwin observed that different species of finches evolved from a common ancestor to exploit different food sources (like seeds, insects, etc.) in the Galapagos Islands.

3. **Conclusion**:
- Based on the analysis, the correct answer is **Darwin’s Finches**, as they exemplify adaptive radiation due to competition for food resources in their environment.

### Final Answer:
The **Darwin finches** shows adaptive radiation resulting from competition for food in a population.

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