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Type II and Type I Restriction Endonucleases

Please help me answer these questions about restriction enzymes.
What is a restriction endonuclease?
Why do molecular biologists use restriction enzymes?
What is the difference between type I and type II restriction endonucleases and why are type II restriction endonucleases more useful for molecular biologists than type I restriction endonucleases?

Solution Preview

Before answering, we need to understand the difference between type I and type II restriction endonucleases. Let's start with some definitions:

Restriction endonucleases are enzymes that recognize very specific DNA sequences, and then cut at or near the recognition sequence.

Type I restriction endonucleases cut at sites that ...

Solution Summary

This solution is a 213 word document that provides help for students to understand the differences between type I and type II restriction endonucleases (restriction enzymes). It also highlights why molecular biologists use restriction enzymes and why type II restriction endonucleases are more useful to molecular biologists than type I restriction endonucleases.

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