The double helix model for DNA was proposed by ............. and ................. .

Explanation

To answer the question regarding who proposed the double helix model for DNA, we can follow these steps:

1. **Identify the Key Information**: The question specifically asks for the names of the scientists who proposed the double helix model of DNA.

2. **Recall Historical Context**: The double helix model of DNA was proposed in the year 1953. This is an important historical fact that can help in identifying the scientists.

3. **Name the Scientists**: The scientists who are credited with proposing the double helix model of DNA are Francis Crick and James Watson.

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