Select the correct option.
`{:(,"Column I",,"Column II"),(A.,"Synapsis",1.,"Pachtene"),(B.,"Centromere split",2.,"Zygotene"),(C.,"The action of enzyme recombinase",3.,"Anaphase II"),(D.,"Centromeres do not split",4.,"Anaphase I"):}`

Options

A. A : 2, B : 1 , C : 3 , D : 4
B. A : 2, B : 3 , C : 1 , D : 4
C. A : 1, B : 2 , C : 3 , D : 4
D. A : 2, B : 3 , C : 4 , D : 1

Answer

To solve the question, we need to match the terms in Column I with the correct descriptions in Column II. Let's break down each term step by step.

### Step 1: Analyze "Synapsis"
- **Definition**: Synapsis is the process where homologous chromosomes pair up during prophase I of meiosis.
- **Correct Match**: This process occurs during the **Zygotene** stage of prophase I.
- **Match**: A (Synapsis) → 2 (Zygotene)

### Step 2: Analyze "Centromere split"
- **Definition**: Centromere splitting refers to the separation of sister chromatids during cell division.
- **Correct Match**: This occurs during **Anaphase II** of meiosis.
- **Match**: B (Centromere split) → 3 (Anaphase II)

### Step 3: Analyze "The action of enzyme recombinase"
- **Definition**: The enzyme recombinase is involved in the process of genetic recombination, particularly during crossing over.
- **Correct Match**: This action occurs during the **Pachytene** stage of prophase I.
- **Match**: C (The action of enzyme recombinase) → 1 (Pachytene)

### Step 4: Analyze "Centromeres do not split"
- **Definition**: In meiosis, centromeres do not split during Anaphase I, allowing homologous chromosomes to separate without splitting the sister chromatids.
- **Correct Match**: This occurs during **Anaphase I**.
- **Match**: D (Centromeres do not split) → 4 (Anaphase I)

### Summary of Matches:
- A → 2 (Synapsis → Zygotene)
- B → 3 (Centromere split → Anaphase II)
- C → 1 (The action of enzyme recombinase → Pachytene)
- D → 4 (Centromeres do not split → Anaphase I)

### Final Answer:
The correct option is **Option 2**:
- A matches with 2,
- B matches with 3,
- C matches with 1,
- D matches with 4.