During replication of DNA, the number of template strands is

Options

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

Answer

To solve the question regarding the number of template strands during DNA replication, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding DNA Structure**: DNA is composed of two strands that form a double helix. Each strand is made up of nucleotides, which contain a sugar, a phosphate group, and a nitrogenous base.

2. **Initiation of Replication**: During DNA replication, the double-stranded DNA unwinds and separates into two individual strands. This process is facilitated by enzymes such as helicase.

3. **Role of Template Strands**: Each of the separated strands serves as a template for the synthesis of new complementary strands. This means that for every original strand, a new strand will be synthesized.

4. **Counting Template Strands**: Since there are two original strands of DNA, and both strands serve as templates for the synthesis of new strands, the total number of template strands during DNA replication is 2.

5. **Conclusion**: Therefore, the answer to the question is that during replication of DNA, the number of template strands is 2.

### Final Answer:
The number of template strands during DNA replication is **2**.

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