Campbell Biology (10th Edition)

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

Chapter 1 - Test Your Understanding - Level 3 - Synthesis/Evaluation: 12


All organisms descended from a common ancestor, which explains why there are shared genes. An example of these shared genes are those that code for organ systems (nervous system, digestive system, respiratory system). However, the heritable changes that have occurred throughout time have given rise to the diversity we now have. Heritable changes are a result of adaptation and evolution.
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.