Campbell Biology (10th Edition)

Published by Pearson
ISBN 10: 0321775651
ISBN 13: 978-0-32177-565-8

Chapter 26 - 26.3 - Concept Check: 2

Answer

Parsimony can give inaccurate results if there were multiple or contradictory steps in an evolutionary event that cannot easily be captured. For example, if a reversion occurs-- this makes it seem as if no change occurred where two (one change, one reversion) occurred. This can lead to organisms being placed back into the ancestral group when they should be in a new one.

Work Step by Step

This question is showing you that the principle of parsimony (see the text where it discusses Occam's razor), though useful in phylogenetics, can be wrong. It cannot be used blindly.
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.