Synthesis of mRNA is :

Options

A. Transcription
B. Translation
C. Translocation
D. Transduction

Answer

To solve the question "Synthesis of mRNA is:", we will analyze the provided options step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the process involved in the synthesis of messenger RNA (mRNA).

2. **Analyzing the Options**:
- **Option 1: Transcription**: This is the process where the information encoded in DNA is copied into a complementary RNA strand. This is indeed the correct process for mRNA synthesis.
- **Option 2: Translation**: This process refers to the synthesis of proteins from mRNA. It does not involve the synthesis of mRNA itself, hence this option is incorrect.
- **Option 3: Translocation**: This term usually refers to the movement of chromosomes or parts of chromosomes. It does not pertain to mRNA synthesis, making this option incorrect as well.
- **Option 4: Transduction**: This is a process where foreign DNA is introduced into a cell, typically by a virus. It is unrelated to the synthesis of mRNA, so this option is also incorrect.

3. **Conclusion**: Based on the analysis, the correct answer is **Option 1: Transcription**. This is the process responsible for synthesizing mRNA from a DNA template.

### Final Answer:
The synthesis of mRNA is **Transcription**.

---