Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 15 - Genes and How They Work - Figure 15.3 - Inquiry Questions: 2


DNA polymerase needs a proofreading function more than RNA polymerase because DNA is a longer-term, archival copy of information, while RNA is short-lived and frequently replaced.

Work Step by Step

DNA is like a machine to make engine parts and RNA the engine parts (not a perfect analogy, but useful here). If you damage the machine, you will always get bad parts--a disaster. If the machine is OK but a few parts come out badly made, you can throw those away and make proper parts in future.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.