Taylor experiment on Vicia faba (broad bean) root tips using autoradiography demonstrates that

Options

A. DNA replication is continuous
B. DNA replicates in discontinuous manner
C. chromosomes show semiconservative replication
D. DNA replicates in conservative manner

Answer

**Step-by-Step Solution:**

1. **Understanding the Context**: The question refers to the Taylor experiment conducted on Vicia faba (broad bean) root tips. This experiment is significant in understanding DNA replication.

2. **Identifying the Method**: The experiment utilized autoradiography, which is a technique that uses radioactive isotopes to label DNA. This allows researchers to visualize the DNA and observe its behavior during replication.

3. **Experimental Setup**: In the experiment, root tips of Vicia faba were treated with a radioactive substance. This labeling was crucial for tracking the newly synthesized DNA strands.

4. **Observation of Results**: After the treatment, the root tips were analyzed. The autoradiography revealed how the DNA was replicated. The key observation was that each new DNA molecule consisted of one old (parental) strand and one newly synthesized strand.

5. **Conclusion**: The results of the Taylor experiment demonstrated that DNA replication is semi-conservative. This means that during DNA replication, each of the two resulting DNA molecules contains one original strand and one newly synthesized strand.

6. **Final Answer**: Therefore, the Taylor experiment on Vicia faba root tips using autoradiography demonstrates that DNA replication is semi-conservative.

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