The enzyme DNA polymerase in E. coli is a DNA dependent polymerase and also has the ability to proofread the DNA strand being synthesised Explain. Discuss the dual polymerase.

Explanation

### Step-by-Step Text Solution:

1. **Introduction to DNA Polymerase in E. coli**:
- In E. coli, DNA polymerase is an essential enzyme responsible for synthesizing DNA. It is classified as a DNA-dependent polymerase, meaning it uses a DNA template to synthesize a new DNA strand.

2. **Types of DNA Polymerases in Bacteria**:
- E. coli contains three main types of DNA polymerases: DNA polymerase I, II, and III. All these polymerases can add nucleotides in the 5’ to 3’ direction, which is crucial for DNA synthesis.

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