Which of the following discoveries resulted in a Nobel Prize

Options

A. X-rays induce sex-linked recessive lethal mutations
B. Cytoplasmic inheritance
C. Recombination of linked genes
D. Genetic engineering

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which of the listed discoveries resulted in a Nobel Prize. It's important to identify the specific discoveries and the scientists associated with them.

2. **Identifying Relevant Discoveries**: One notable discovery is that of H. J. Muller, who was awarded the Nobel Prize in 1946. His work focused on the effects of X-ray irradiation on genetics.

3. **Detailing H. J. Muller's Contribution**: H. J. Muller discovered that X-ray irradiation could induce mutations. This was significant as it demonstrated a method by which mutations could be produced, which has implications in genetics and evolutionary biology.

4. **Evaluating Other Options**:
- **Cytoplasmic inheritance**: This concept was not awarded a Nobel Prize.
- **Recombination linked gene**: This is also not associated with a Nobel Prize.
- **Genetic engineering**: While significant, it has not been awarded a Nobel Prize in the same context as Muller's work.

5. **Conclusion**: Based on the information, the correct answer is that H. J. Muller's discovery of X-ray induced mutations is the one that resulted in a Nobel Prize.

**Final Answer**: The correct answer is option A: X-ray induces X-linked recessive lethal mutation.

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