Experimental proof of theory of chemical evolution of life was given by

Options

A. Hershey and Chose
B. Oparin and Haldane
C. Urey and Miller
D. Alfred Wallace

Answer

To solve the question regarding who provided the experimental proof of the theory of chemical evolution of life, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Theory of Chemical Evolution**:
- The theory of chemical evolution posits that life originated from simple inorganic compounds through a series of chemical reactions that led to more complex organic molecules. This theory was initially proposed by scientists such as Operon and Haldane.

2. **Identifying the Key Experiment**:
- To validate this theory, experimental evidence was needed. The key experiment that provided this evidence was conducted in the 1950s.

3. **Miller-Urey Experiment**:
- The experimental proof was provided by Stanley Miller and Harold Urey. They designed an experiment that simulated the conditions of the early Earth, including a mixture of gases thought to be present at that time (such as methane, ammonia, hydrogen, and water vapor).

4. **Conducting the Experiment**:
- In their experiment, they created an apparatus that allowed for the circulation of these gases and subjected them to electrical sparks to simulate lightning. This setup aimed to mimic the energy sources that could have driven chemical reactions on the primitive Earth.

5. **Results of the Experiment**:
- After running the experiment for a week, Miller and Urey analyzed the resulting mixture and found that several amino acids, which are the building blocks of proteins, had formed. This was significant evidence supporting the idea that organic compounds could be synthesized from inorganic precursors under conditions similar to those on early Earth.

6. **Conclusion**:
- Therefore, the experimental proof of the theory of chemical evolution of life was conclusively provided by the work of Miller and Urey.

### Final Answer:
The experimental proof of the theory of chemical evolution of life was given by Miller and Urey.

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