Senior Vice President, STEM: Daryl Fox

Executive Program Director: Sandra Lindelof

Program Manager, Biochemistry: Elizabeth Simmons

Senior Marketing Manager: Maureen Rachford

Executive Content Development Manager, STEM: Debbie Hardin

Development Editor: Catherine Murphy

Executive Project Manager, Content, STEM: Katrina Mangold

Editorial Project Manager: Karen Misler

Director of Content, Life and Earth Sciences: Jennifer Driscoll Hollis

Executive Media Editor: Amy Thorne

Media Editors: Cassandra Korsvik, Kelsey Hughes

Editorial Assistant: Nathan Livingston

Marketing Assistant: Morgan Psiuk

Director of Content Management Enhancement: Tracey Kuehn

Senior Managing Editor: Lisa Kinne

Senior Content Project Manager: Vivien Weiss

Senior Workflow Project Manager: Paul W. Rohloff

Production Supervisor: Robert Cherry

Director of Design, Content Management: Diana Blume

Design Services Manager: Natasha Wolfe

Cover Designer: John Callahan

Text Designer: Maureen McCutcheon

Art Managers: Janice Donnola, Matthew McAdams

Illustrations: Emiko Paul, H. Adam Steinberg

Director of Digital Production: Keri deManigold

Media Project Manager: Brian Nobile

Permissions Manager: Michael McCarty

Media Permissions Manager: Christine Buese

Photo Researcher: Jennifer Atkins

Composition: Lumina Datamatics, Inc.

Title Page and Part Openers: Janet Iwasa, University of Utah; Cover Image: © CHRISTOPH BURGSTEDT/SCIENCE PHOTO LIBRARY/Getty Images

ISBN-13: 978-1-319-32297-2 (epub)

© 2021, 2017, 2013, 2008 by W. H. Freeman and Company

All rights reserved.

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