Evidence of replication on Vicia faba root tip was given by

Options

A. Meselson and Stahl
B. Taylor
C. Koch
D. Waston and Crick

Answer

**Step-by-Step Solution:**

1. **Identify the Plant Used in the Experiment**: The question refers to the plant Vicia faba, commonly known as the broad bean. This plant is often used in genetic studies due to its large and easily observable chromosomes.

2. **Understand the Type of Replication Studied**: The experiment conducted on Vicia faba root tips provided evidence for the semi-conservative nature of DNA replication. This means that during DNA replication, each of the two new DNA molecules contains one original strand and one newly synthesized strand.

3. **Identify the Scientist Involved**: The scientist who conducted the experiment on Vicia faba is Arthur Kornberg. He performed experiments that demonstrated the semi-conservative replication of DNA.

4. **Differentiate from Other Scientists**: While other scientists like Meselson and Stahl also provided evidence for semi-conservative replication, they did so using Escherichia coli (E. coli). Watson and Crick are known for elucidating the double helical structure of DNA, and Koch is known for his work on tuberculosis, not DNA replication.

5. **Conclude the Correct Answer**: Based on the evidence provided from the Vicia faba root tip experiment, the correct answer to the question is Arthur Kornberg.

**Final Answer**: The evidence of replication on Vicia faba root tip was given by Arthur Kornberg.

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