Which enzyme is responsible for recombination process in meiosis-I ?

Options

A. Recombinase
B. Protease
C. DNA ligase only
D. DNA Polymerase

Answer

To determine which enzyme is responsible for the recombination process during meiosis-I, we can analyze the options provided:

1. **Recombinase**: This enzyme is specifically involved in the process of recombination, which includes the exchange of genetic material between non-sister chromatids of homologous chromosomes during meiosis. This is the correct answer.

2. **Protease**: This enzyme is responsible for degrading proteins. Since it does not play a role in DNA recombination, it is not the correct answer.

3. **DNA Ligase**: This enzyme functions as a molecular glue that repairs nicks in the DNA strand. While it is important for DNA repair and joining fragments, it is not directly involved in the recombination process during meiosis.

4. **DNA Polymerase**: This enzyme is responsible for synthesizing new DNA strands during DNA replication. It does not play a role in the recombination process of meiosis.

Based on this analysis, the enzyme responsible for the recombination process in meiosis-I is **Recombinase**.

### Step-by-Step Solution:
1. **Identify the process**: Understand that recombination occurs during meiosis-I, specifically during crossing over.
- **Hint**: Recall that meiosis involves two divisions and crossing over occurs in the first division.

2. **Analyze the options**: Review each enzyme option provided.
- **Hint**: Consider the specific functions of each enzyme in relation to DNA and genetic material.

3. **Eliminate incorrect options**:
- Protease does not relate to DNA recombination.
- DNA Ligase is involved in joining DNA fragments, not recombination.
- DNA Polymerase is for DNA synthesis, not recombination.
- **Hint**: Focus on the specific role of each enzyme in genetic processes.

4. **Identify the correct enzyme**: Recognize that Recombinase is directly involved in the recombination process during meiosis.
- **Hint**: Remember that recombinase facilitates the exchange of genetic material between homologous chromosomes.

5. **Conclude the answer**: The correct answer is **Recombinase**.