Who suggested that the two strands of DNA separate and each strand acts as a template for the synthesis of new complementary strands?

Options

A. Watson and Crick
B. Hershey and Chase
C. Griffith
D. Mendet

Explanation

To answer the question "Who suggested that the two strands of DNA separate and each strand acts as a template for the synthesis of new complementary strands?", we can follow these steps:

### Step-by-Step Solution:

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

**Hint**: Recall that DNA is structured as a double helix with complementary base pairing.

2. **DNA Replication Process**:
- During DNA replication, the two strands of the DNA molecule unwind and separate. Each original strand serves as a template for the synthesis of a new complementary strand.

**Hint**: Think about how the base pairing rules (A-T and C-G) play a role in the formation of new strands.

3. **Historical Context**:
- The concept of DNA replication involving the separation of strands and the use of templates was primarily proposed by Watson and Crick. They are credited with elucidating the double helix structure of DNA and the mechanism of replication.

**Hint**: Remember the key figures in the discovery of DNA structure and replication.

4. **Identifying the Correct Answer**:
- Among the options provided, the correct answer to the question is that Watson and Crick suggested that the two strands of DNA separate and each strand acts as a template for the synthesis of new complementary strands.

**Hint**: Look for the names associated with the double helix model and DNA replication.

### Final Answer:
The correct answer is **Watson and Crick**.