Biology (11th Edition)

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

Chapter 28 - Prokaryotes - Review Questions - Synthesize: 2


Heat-killed bacteria in the Griffiths experiment would have released their chromosomes into the environment, which could then have been taken up by non-virulent bacteria. Using the new DNA, these would have become virulent by getting the genes for the smooth coat.

Work Step by Step

First consider means of DNA transfer: one of them allows for transfer from the environment. This could explain transfer of virulence to non-virulent bacteria without living virulent cells being involved.
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.