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The enzyme DNA polymerase in E.coli is a...

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

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JMD PUBLICATION-PRACTICE SAMPLE PAPER (SOLVED)-EXERCISE
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  4. What is DNA polymorphism? Why is it important to study it?

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