m RNA is synthesized on DNA template in which of the following direction

Options

A. `5' rarr 3'`
B. `3' rarr5'`
C. Both direction
D. Any direction

Answer

To determine the direction in which mRNA is synthesized on a DNA template, we need to understand the process of transcription. Here’s a step-by-step solution:

### Step 1: Understand Transcription
Transcription is the process by which mRNA is synthesized from a DNA template. This process involves several key steps: initiation, elongation, and termination.

**Hint:** Remember that transcription is the first step in gene expression where DNA is converted into RNA.

### Step 2: Identify the Steps of Transcription
1. **Initiation**: This is where the RNA polymerase enzyme binds to the DNA at the promoter region and starts synthesizing RNA.
2. **Elongation**: During this phase, the RNA strand is extended. This is crucial for determining the direction of synthesis.
3. **Termination**: This is the final step where the RNA polymerase stops transcription and releases the newly formed mRNA.

**Hint:** Focus on the elongation phase to find the direction of mRNA synthesis.

### Step 3: Determine the Direction of Elongation
During the elongation phase, mRNA is synthesized in the 5' to 3' direction. This means that nucleotides are added to the 3' end of the growing mRNA strand.

**Hint:** Recall that nucleic acids are always synthesized in the 5' to 3' direction.

### Step 4: Conclusion
Since mRNA is synthesized in the 5' to 3' direction during the elongation phase of transcription, the correct answer to the question is that mRNA is synthesized on the DNA template in the 5' to 3' direction.

**Hint:** Look for options that specify the 5' to 3' direction for the correct answer.

### Final Answer
The correct answer is **5' to 3' direction** (Option 1).