BSCS Biology A Molecular Approach Student Edition Glencoe Mcgraw-Hill PDF Version
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BSCS Biology A Molecular Approach Student Edition
Glencoe Mcgraw-Hill Digital Instant Download
Author(s): Glencoe McGraw-Hill
ISBN(s): 9780078664274, 0078664276
Edition: 9
File Details: PDF, 51.11 MB
Year: 2004
Language: english
interactive student edition
BSCS
5415 Mark Dabling Blvd.
Colorado Springs, CO 80918-3842
BSCS Biology: A Molecular Approach, 9th Edition
Cover Image The cover image is a color-enhanced micrograph of pancreatic epithelial cells showing the distribution of
DNA (blue), microtubules (green), and actin (purple) (2520 at 70 mm).
Copyright © 2006 BSCS. Published by Glencoe/McGraw-Hill Companies, Inc. All rights reserved. Printed in North America. This
publication is protected by copyright, and permission should be obtained from the publisher prior to any form of reproduction or
unauthorized use. Any questions regarding this policy should be addressed to:
Glencoe/McGraw-Hill
8787 Orion Place
Columbus, Ohio 43240-4027
ISBN 0-07-866427-6
1 2 3 4 058/111 07 06 05 04
FOREWORD
All around us, life on Earth is engaged in an ancient and delicate dance of interdependence.
Although we humans are only recent partners in this performance, we are deeply involved
because all life is related. We are also involved mentally because evolution has given us mental
capacities that allow us to probe the complexity of life in ever-greater detail and—today—to
manipulate living systems in ways that were science fiction a generation ago. And we are
involved emotionally because biology engages the human spirit at very basic levels. We not only
know that we are part of the living world, we feel it—in our love of animals and wilderness, in
the pleasure we feel while in our gardens, and in our fascination with the primates that are our
closest cousins.
These days it is virtually impossible to avoid exposure to the implications of modern biology.
Television news programs announce the discovery of a gene that is associated with breast
cancer; newspapers report on the use of DNA analysis in criminal cases; popular magazines
discuss the most recent discoveries about human evolution; and celebrities warn about over-
population, starvation, and threats to tropical rain forests. Although such issues may appear
unrelated at first, they illustrate a rather small number of major principles that are common to all
living systems. These principles help shape our study of biology, and they provide the foundation
for this book:
• Evolution: patterns and products of change • Interaction and interdependence
• Genetic continuity and reproduction • Growth, development, and differentiation
• Energy, matter, and organization • Maintenance of a dynamic equilibrium
• Science, technology, and society
BSCS Blue Version approaches these seven principles largely from the perspective of
molecular biology and focuses on minute structures such as cells and genes, as well as on the
processes related to them. It would be a mistake, however, to assume that one can understand
life on Earth only by studying its smallest parts because all of these parts and their processes
ultimately exert their effects in whole organisms, which in turn interact with their external
environments. This book will introduce you to some of those interactions. Equally important,
BSCS Blue Version will introduce you to the nature of science. It will require you to use the
intellectual tools of inquiry that are common to all of science, which is a unique and powerful
system for asking questions about the natural world.
As you work with your fellow students and your teacher to improve your understanding of
biology, you will encounter a variety of intellectual challenges (and maybe even some
frustration) about the intricacies of life on Earth. But we hope you also will find great rewards.
For as you uncover some of the mysteries of living systems, you likely will develop an increased
sense of wonder and respect for both life’s stunning complexity and its elegant simplicity.
If we have done our job well, this book will leave you with an improved understanding of the
myriad steps in life’s dance of interdependence. In addition, you will acquire the insights
necessary to make informed decisions about personal and social issues that have their roots in
biology, and you will acquire the skills necessary to debate those issues.
We hope you, your fellow students, and your teacher will let us know whether we have
accomplished our goals. We welcome your feedback, and we welcome you to the ninth edition of
BSCS Blue Version.
iii
CONTENTS
Prologue Biology and the Molecular Perspective . . . . .1
The New Biology—P.1 Biology in Your World, P.2 A Biological View of
AIDS, P.3 Growth Hormone: New Solution, New Problem
The Methods of Science—P.4 Solving Problems, P.5 A Mechanism for
Evolution: Science at Work, P.6 The Theory of Natural Selection
Science as a Way of Knowing—P.7 Scientific Perspectives, P.8 Your Role
as a Biologist
iv
Chapter 4 Autotrophy: Collecting Energy from the
Nonliving Environment . . . . . . . . . . . . . . . .100
Autotrophy and Photosynthesis—4.1 What Are Autotrophs?,
4.2 Overview of Photosynthesis, 4.3 The Light Reactions, 4.4 The Calvin Cycle
Photosynthesis and the Environment—4.5 Rate of Photosynthesis,
4.6 Photorespiration and Special Adaptations, 4.7 Photosynthesis and the
Atmosphere
Chemoautotrophy—4.8 Varieties of Chemoautotrophs,
4.9 Chemoautotrophs and the Environment
v
Chapter 8 The Cell Cycle . . . . . . . . . . . . . . . . . . . . . . .212
The Life of a Eukaryotic Cell—8.1 Cell Division in Eukaryotes, 8.2 The
Phases of the Cell Cycle
DNA Replication—8.3 DNA Structure, 8.4 DNA Synthesis, 8.5 DNA Repair
Mitosis and Cell Division—8.6 The Stages of Cell Division,
8.7 Differences in Mitosis
Regulation of the Cell Cycle—8.8 Control of the Cell Cycle, 8.9 Checkpoints
vi
Unit 3 Heredity: Continuity of Life
vii
Chapter 16 Population Genetics . . . . . . . . . . . . . . . . .416
Genetic Variation in Populations—16.1 Populations and Gene Pools,
16.2 Genetic Variation, 16.3 The Hardy-Weinberg Model
Changes in Gene Pools—16.4 Microevolution in Large Populations,
16.5 Microevolution in Small Populations, 16.6 Quantitative Traits
Unit 4 Evolution
viii
Chapter 20 Human Evolution . . . . . . . . . . . . . . . . . . . .518
Common Origin of Primates—20.1 Identifying Primates, 20.2 Comparing
Skeletal Evidence, 20.3 Comparing Molecular Evidence, 20.4 Dating Human
Fossils
Human Origins and Populations—20.5 Early Hominids, 20.6 The First
Humans, 20.7 Gene Pools
ix
Unit 6 Interactions and Interdependence
Biological Challenges
Careers Biology, Ethics, and Public Policy . . . . . . . . . . . . . . . . . . . . .5
Technology The Scanning Tunneling Microscope . . . . . . . . . . . . . . . . . .46
Research Identification of Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Research Understanding Cystic Fibrosis . . . . . . . . . . . . . . . . . . . . . . .86
Discoveries The Secret of Vegetation . . . . . . . . . . . . . . . . . . . . . . . . . . .107
Research Energy Regulation and Obesity . . . . . . . . . . . . . . . . . . . . .149
Discoveries The Cell Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159
Discoveries Discovering the Secret of Circulation . . . . . . . . . . . . . . . .199
Research Chromosome Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . .220
Discoveries Learning the Language of Genetics . . . . . . . . . . . . . . . . . .239
Discoveries Molecules and Muscle Differentiation . . . . . . . . . . . . . . . .286
Research Control of Organ Formation . . . . . . . . . . . . . . . . . . . . . . . .307
Research Cloning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .321
Research The Human Genome Project . . . . . . . . . . . . . . . . . . . . . . .350
Research Medicine and Mitochondria . . . . . . . . . . . . . . . . . . . . . . . .376
Technology The Polymerase Chain Reaction . . . . . . . . . . . . . . . . . . . .401
Research QTL Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .432
x
Technology Using Radioactivity to Date Earth Materials . . . . . . . . . .442
Research Classification of the Giant Panda . . . . . . . . . . . . . . . . . . . .473
Research Archaea and Classification . . . . . . . . . . . . . . . . . . . . . . . . .481
Discoveries Soft-Tissue Fossils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .502
Research Mass Extinction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .512
Discoveries The Mother of Us All? . . . . . . . . . . . . . . . . . . . . . . . . . . . . .528
Discoveries Learning and Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . .558
Research Teaching Language to Nonhuman Primates . . . . . . . . . . .598
Research Susumu Tonegawa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .618
Technology Robots for Ecology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .644
Research The Atmosphere in Danger . . . . . . . . . . . . . . . . . . . . . . . . .673
Theory
Theory in Science . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Materialism and Vitalism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
Engineering Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .276
What is a Gene? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .412
The Theory of Punctuated Equilibrium . . . . . . . . . . . . . . . . . . . . . . . . . . .514
Sociobiology: An Evolutionary Theory of Behavior . . . . . . . . . . . . . . . .594
Organism Earth: The Gaia Hypothesis . . . . . . . . . . . . . . . . . . . . . . . . . . .676
Laboratory Investigations
Introduction to Laboratory Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .680
PA Analyzing Ethical Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .689
PB Scientific Observation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .690
PC The Compound Microscope . . . . . . . . . . . . . . . . . . . . . . . . . . . .691
PD Developing Concept Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . .694
1A Organisms and pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .696
1B Compounds of Living Things . . . . . . . . . . . . . . . . . . . . . . . . . . .698
2A Are Corn Seeds Alive? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .700
2B Food Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .702
2C Enzyme Activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .704
xi
2D Starch Digestion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .707
3A Cells and Movement of Materials . . . . . . . . . . . . . . . . . . . . . . .709
3B Diffusion and Cell Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .712
3C The Kidney and Homeostasis . . . . . . . . . . . . . . . . . . . . . . . . . .713
4A Photosynthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .714
4B Rate of Photosynthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .716
4C Chemoautotrophs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .718
5A How Does Oxygen Affect Cells? . . . . . . . . . . . . . . . . . . . . . . . .719
5B Rates of Respiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .720
6A Cell Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .723
6B From One Cell to Many . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .725
7A Water Movement in Plants . . . . . . . . . . . . . . . . . . . . . . . . . . . . .726
7B Exercise and Pulse Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .729
8A DNA Replication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .730
8B Mitotic Cell Division . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .731
9A Transcription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .732
9B Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .733
10A Development in Polychaete Worms . . . . . . . . . . . . . . . . . . . . .736
11A Seeds and Seedlings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .737
11B Tropisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .739
12A A Model of Meiosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .741
12B The Yeast Life Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .743
12C Reproduction in Mosses and Flowering Plants . . . . . . . . . . . .746
13A Probability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .748
13B Seedling Phenotypes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .749
13C A Dihybrid Cross . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .751
14A Jumping Genes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .755
15A Determining Mutation Frequency in Bacteria . . . . . . . . . . . . .756
16A Sickle-Cell Disease . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .758
17A Molecular Evolution in the Test Tube . . . . . . . . . . . . . . . . . . . .760
17B Coacervates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .762
18A Using Cladistics to Construct Evolutionary Trees . . . . . . . . .763
18B Structural Characteristics of Animals . . . . . . . . . . . . . . . . . . .764
19A Geological Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .767
xii
19B A Model Gene Pool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .768
20A Interpretation of Fossils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .770
20B Archaeological Interpretation . . . . . . . . . . . . . . . . . . . . . . . . . .774
21A Sensory Receptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .777
21B Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .778
22A A Lesson in Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .780
22B Trial-and-Error Learning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .781
22C A Field Study of Animal Behavior . . . . . . . . . . . . . . . . . . . . . . .782
23A Antigen-Antibody Binding . . . . . . . . . . . . . . . . . . . . . . . . . . . . .783
23B Antibody Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .787
24A Producers in an Ecosystem . . . . . . . . . . . . . . . . . . . . . . . . . . . .789
24B Relationships between a Plant and an Animal . . . . . . . . . . . .791
25A Producers in an Aquatic Ecosystem . . . . . . . . . . . . . . . . . . . . .792
25B Ecosystem Diversity within a Biome . . . . . . . . . . . . . . . . . . . .794
Appendices
1A The Periodic Table of the Elements . . . . . . . . . . . . . . . . . . . . .798
1B Radioisotopes and Research in Biology . . . . . . . . . . . . . . . . . .798
4A ATP Synthesis in Chloroplasts and Mitochondria . . . . . . . . . .800
6A Preparing Cells for Study . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .800
12A Pollination by Insects Aids Fertilization . . . . . . . . . . . . . . . . .801
13A The Chi-Square Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .802
13B Gene Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .803
20A Physical Adaptations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .804
20B The Old Man from La Chapelle-aux-Saints . . . . . . . . . . . . . . .805
20C Cultural Evolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .806
22A Innate Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .806
23A Antibody Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .807
23B Generating Antibody Diversity . . . . . . . . . . . . . . . . . . . . . . . . .808
Glossary/Glosario . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .810
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .849
xiii
ACKNOWLEDGMENTS
CONTRIBUTING WRITERS AND Dorothy B. Engle, Ph.D., Xavier University,
EDITORS Cincinnati, OH (Chapters 6, 8, 10, 11, 13, 14, 15, 18,
21, 23, and 24)
Robert Bouchard, Ph.D., College of Wooster,
Wooster, OH (Chapter 7) Erica Goldman, University of Washington, Seattle,
WA (Chapter 22)
James Curtsinger, Ph.D., University of Minnesota,
St. Paul, MN (Chapter 16) Andre Jagendorf, Ph.D., Cornell University, Ithaca,
NY (Chapter 4)
Michael Dougherty, Ph.D., BSCS and Hampden-
Sydney College (Prologue, Chapters 1–3 and 7) Kenneth E. Kinman, Hays, KS (Chapter 18)
Charles Ellis, Ph.D., Northeastern University, Martin K. Nickels, Ph.D., Illinois State University,
Boston, MA (Chapter 10) Normal, IL (Chapter 20)
Ellen Friedman, San Diego, CA (Chapters 3, 9, 12, Patsye Peebles, University Lab School, Louisiana
14, 19, and 20) State University, Baton Rouge, LA (Investigations)
Francine Galko, Austin, TX (Chapter 22, Glossary) William B. Provine, Ph.D., Cornell University, Ithaca,
NY (Chapters 16, 19, and 20)
Judy Hammett, Ph.D., Indiana University,
Bloomington, IN (Theory Boxes) Tim L. Setter, Ph.D., Cornell University, Ithaca, NY
(Chapter 11)
S. B. Kater, Ph.D., University of Utah School of
Medicine, Salt Lake City, UT (Chapter 21) Randy Wayne, Ph.D., Cornell University, Ithaca, NY
(Chapter 6)
Joseph D. McInerney, BSCS and Johns Hopkins
University (Chapter 17) Michael P. Yaffe, Ph.D., University of California, San
Diego, La Jolla, CA (Chapter 5)
Jeffrey C. Murray, M.D., University of Iowa Hospital,
Iowa City, IA (Chapter 15) Julie Yetman, Midland, MI (Chapter 24)
Jerry L. Phillips, Ph.D., BSCS, Colorado Springs, CO Miriam Zolan, Ph.D., Indiana University,
(Chapter 23, Investigations) Bloomington, IN (Chapter 13)
Mahendra Rao, MBBS, Ph.D., University of Utah
School of Medicine, Salt Lake City, UT (Chapter 21) ADDITIONAL CONTRIBUTORS AND
CONSULTANTS
Kodi Ravichandran, Ph.D., University of Virginia,
Charlottesville, VA (Chapter 23) Ken Andrews, Ph.D., Colorado College, Colorado
Sam Stoler, Ph.D., University of Massachusetts, Springs, CO (Microbiology)
Amherst, MA (Chapter 8) John Bannister-Marx, Camp Verde High School,
Richard Wright, Ph.D., South Hamilton, MA Camp Verde, AZ (Investigations)
(Chapter 25) Lisa Chilberg, Graphic Consultant, BSCS (Brief
Survey of Organisms)
REVIEWERS David Desmarais, Ph.D., Ames Research Center,
Moffett Field, CA (Chapter 17)
Nathan Dubowsky, Ph.D., Westchester Community
College, State University of New York, Valhalla, NY Ann Lanari, Research Assistant, BSCS, Colorado
(Chapter 19) Springs, CO
xiv
REVIEWERS OF THE EIGHTH AND Turlock High School, Turlock, CA; Robert Jurmain,
EARLIER EDITIONS San Jose State University, San Jose, CA; John C.
Kay, Iolani School, Honolulu, HI; Donald W. Lamb,
Steve Almond, Halliburton Services, Oxnard, CA;
Manning High School, Manning, IA; Barbara Lester,
Aimee Bakken, University of Washington, Seattle,
Ransom Everglades School, Coconut Grove, FL;
WA; Bob Barela, Bishop Manogue High School,
Stephen R. Lilley, J. E. B. Stuart High School, Falls
Reno, NV; Warren Bennett, Hampton High School,
Church, VA; Daniel R. Lipinski, Bishop Eustace
Hampton, VA; Richard Benz, Wickliffe High School,
Preparatory School, Pensauken, NJ; Lynn Margulis,
Wickliffe, OH; Mary Ann Braus, Chadwick School,
University of Massachusetts, Amherst, MA; Robert
Palos Verdes Peninsula, CA; Lornie Bullerwell,
Martin, Colorado State University, Fort Collins, CO;
Dedham High School, Dedham, MA; Jack Carter,
Robert T. Mills, P.S.B.G.M., Montreal, Quebec; Janice
Colorado College, Colorado Springs, CO; Ron
Morrison, Hathaway Brown School, Shaker Heights,
Clarno, Sunset High School, Beaverton, OR; Donna
OH; Jeff Murray, University of Iowa Hospitals, Iowa
Coffman, Colorado Springs, CO; Steve DeGusta, J. F.
City, IA; Joseph D. Novak, Cornell University, Ithaca,
Kennedy High School, Sacramento, CA; Wilma M.
NY; Larry Ochs, Norwich Free Academy, Norwich,
Giol de Rivera, Colegio San Ignacio de Loyola,
CT; Gordon Peterson, San Marino High School,
Puerto Rico; Kevin de Queiroz, University of
San Marino, CA; Annette Prioli-Lee, St. Bernard
California, Berkeley, CA; Raymond G. Edwards,
High School, Playa Del Ray, CA; Robert L. Ragley,
Tamaqua Area High School, Tamaqua, PA; James
Beachwood High School, Beachwood, OH; Ken
Enderson, Colorado College, Colorado Springs, CO;
Rainis, Ward’s Natural Science Establishment,
Frank Fitch, Ben May Institute, Chicago, IL; Al
Rochester, NY; R. Ward Rhees, Brigham Young
Fruscione, Lexington High School, Lexington, MA;
University, Provo, UT; John A. Rhodes, Avery
Suzanne S. Galando, Mt. Pleasant Area Senior High
Coonley School, Downers Grove, IL; Ailene Rogers,
School, Mt. Pleasant, PA; Lotte R. Geller, The
National Cathedral School, Mt. St. Albans,
Roeper School for Gifted Children, Bloomfield Hills,
Washington, DC; Parker Small, University of
MI; JoAnne Gray, Corliss High School, Chicago, IL;
Florida, Gainesville, FL; William G. Smith,
Barbara Grosz, Pine Crest School, Ft. Lauderdale,
Moorestown Friends School, Moorestown, NJ;
FL; Edward A. J. Hall, Catonsville High School,
Richard D. Storey, Colorado College, Colorado
Catonsville, MD; Robert C. Heck, Moniteau High
Springs, CO; Douglas Swartzendruber, University
School, West Sunbury, PA; Bobbie S. Hinson,
of Colorado, Colorado Springs, CO; Jean Paul
Providence Day School, Charlotte, NC; Michael
Thibault, Cape Elizabeth High School, Cape
Hoffman, Colorado College, Colorado Springs, CO;
Elizabeth, ME; Kent VanDeGraaff, Brigham Young
Dick Howick, Belmont High School, Belmont, MA;
University, Provo, UT; Alex Vargo, Colorado
Marlene H. Jacoby, Charlotte Country Day School,
College, Colorado Springs, CO; William H. Wagstaff,
Charlotte, NC; Duane Jeffery, Brigham Young
Mead Senior High School, Spokane, WA; Bruce
University, Provo, UT; Marian S. Johnson, River Dell
Wallace, Virginia Tech, Blacksburg, VA
Regional Schools, Oradell, NJ; Eric E. Julien,
xv
James King-Holmes/Photo Researchers
CONTENTS
THE NEW BIOLOGY
P.1 Biology in Your World
P.2 A Biological View of AIDS
P.3 Growth Hormone: New Solution,
New Problem
THE METHODS OF SCIENCE
P.4 Solving Problems
P.5 A Mechanism for Evolution: Science
at Work
P.6 The Theory of Natural Selection
SCIENCE AS A WAY OF KNOWING
P.7 Scientific Perspectives
P.8 Your Role as a Biologist
LEARNING OUTCOMES
By the end of this chapter you will be able to:
A Discuss the importance of biology and biotechnology in everyday life.
B Relate the problem-solving methods of science to the development of a theory of
evolution.
C Summarize Darwin’s theory of evolution by natural selection.
D Recognize the differences between pseudoscience and true science.
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