Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Explain the different ways natural selection can shape populations
Describe how these different forces can lead to different outcomes in terms of the population variation

This site from Palomar College contains a quiz that provides a nice review of the historyof Darwin's work and natural selection. Providesfor immediate feedback as soon as an answer is entered.

This pathway explores the concepts of natural selection and evolution of populations. Stories from scientists sharing their perspective on this topic and their research are embedded throughout the pathway.