Reverse transcriptase can synthesise

Options

A. DNA → DNA
B. DNA → RNA
C. RNA → Protein
D. RNA → DNA

Answer

To solve the question "Reverse transcriptase can synthesise," we need to understand the role of reverse transcriptase in biological processes. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand Reverse Transcriptase
Reverse transcriptase is an enzyme that synthesizes DNA from an RNA template. This process is the opposite of the usual transcription process, where DNA is used to synthesize RNA.

**Hint**: Remember that reverse transcriptase is crucial for retroviruses, which use this enzyme to convert their RNA into DNA.

### Step 2: Identify the Process
In the context of reverse transcription, the process can be summarized as:
- RNA → DNA
This is the key function of reverse transcriptase, as it allows the synthesis of DNA from RNA.

**Hint**: Focus on the direction of synthesis; reverse transcriptase creates DNA from RNA, not the other way around.

### Step 3: Compare with Other Processes
Now, let’s compare this with other processes mentioned:
- **Replication**: DNA to DNA
- **Transcription**: DNA to RNA
- **Translation**: RNA to Protein

None of these processes involve synthesizing DNA from RNA, which is specific to reverse transcriptase.

**Hint**: Eliminate options that do not involve RNA being converted to DNA.

### Step 4: Conclusion
The only correct statement regarding what reverse transcriptase can synthesize is:
- **RNA to DNA**

Thus, the answer to the question "Reverse transcriptase can synthesise" is that it synthesizes DNA from RNA.

**Final Answer**: Reverse transcriptase can synthesise DNA from RNA.