Reverse transcription was discovered by :-

Options

A. Watson and Crick
B. khorana
C. Temin and Baltimore
D. Meischer

Answer

To solve the question "Reverse transcription was discovered by:", we will analyze the options provided and identify the correct answer through a step-by-step approach.

### Step 1: Understand Reverse Transcription
- Reverse transcription is a biological process where RNA is used as a template to synthesize DNA. This is the opposite of the usual transcription process, where DNA is transcribed into RNA.

### Step 2: Identify the Enzyme Involved
- The enzyme responsible for reverse transcription is called reverse transcriptase. This enzyme catalyzes the formation of complementary DNA (cDNA) from an RNA template.

### Step 3: Review the Options
- The options given are:
1. Watson and Crick
2. Khurana
3. Tamin and Baltimore
4. Meselson

### Step 4: Analyze Each Option
- **Watson and Crick**: They are famous for discovering the double helix structure of DNA, not for reverse transcription.
- **Khurana**: He is known for his work on the genetic code, not reverse transcription.
- **Tamin and Baltimore**: These scientists are credited with the discovery of reverse transcription.
- **Meselson**: He is known for his work in DNA isolation, not reverse transcription.

### Step 5: Conclusion
- Based on the analysis, the correct answer is **Tamin and Baltimore**. They discovered reverse transcription and were awarded the Nobel Prize in 1975 for their work.

### Final Answer
**Reverse transcription was discovered by Tamin and Baltimore.**

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