Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution?

Options

A. Development of transgenic animals
B. Production of 'Dolly' the sheep by cloning
C. Prevalence of pesticide resistant insects
D. Development from 'stem cells' for organ transplantation.

Answer

To solve the question regarding which phenomenon supports Darwin's concept of natural selection in organic evolution, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Darwin's Theory of Natural Selection**:
- Darwin's theory emphasizes that organisms with traits better suited to their environment are more likely to survive and reproduce. This leads to the gradual evolution of species.

2. **Identify the Options**:
- The question provides several options (not listed here), but we need to focus on identifying which phenomenon aligns with natural selection.

3. **Analyze Each Option**:
- Look for examples that illustrate the concept of survival of the fittest and adaptation to environmental pressures.

4. **Focus on Pesticide Resistance**:
- One of the options mentions the prevalence of pesticide-resistant insects. This is a clear example of natural selection. Over time, insects that have mutations allowing them to survive pesticide exposure will reproduce, leading to a population that is predominantly resistant to pesticides.

5. **Contrast with Other Options**:
- Other options may involve artificial processes or human-induced changes that do not reflect natural selection. For example, recombinant DNA technology or other artificial selection methods do not illustrate the natural evolutionary process.

6. **Conclude with the Correct Answer**:
- Based on the analysis, the phenomenon that supports Darwin's concept of natural selection is the prevalence of pesticide-resistant insects.

### Final Answer:
The correct option is the prevalence of pesticide-resistant insects.

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