Addressing the theories behind population genetics and relevant empirical evidence, John Gillespie discusses genetic drift, natural selection, nonrandom mating, quantitative genetics, and the evolutionary advantage of sex. First published to wide acclaim in 1998, this brilliant primer has been updated to include new sections on molecular evolution, genetic drift, genetic load, the stationary distribution, and two-locus dynamics. This book is indispensable for students working in a laboratory setting or studying free-ranging populations.

    In response to suggestions from students and instructors, the book has been trimmed more than 100 pages and rewritten with the goal to optimize its use as a teaching aid. It introduces the principles of genetics and statistics that are relevant to population studies, and examines the forces affecting genetic variation from the molecular to the organismic level. Integrated throughout the book are descriptions of molecular methods used to study variation in natural populations, as well as explanations of the relevant estimation theory using actual data. Chapter 1 presents the fundamental genetic and statistical concepts in population genetics. Chapter 2 reviews the types and prevalence of genetic variation in natural populations. This is followed in Chapter 3 by a detailed examination of the implications of random mating for one locus and multiple loci. Chapter 4 examines population subdivision and its consequences for the distribution of genetic variation among subpopulations, including the hierarchical F statistics used in estimating these effects. Chapters 5 through 7 deal with mutation, migration, natural selection in all its varieties, and the consequences of random genetic drift. Molecular population genetics, including coalescent theory, is the subject of Chapter 8. Quantitative genetics is covered in Chapter 9, from the standpoint of genetic variance and covariance components as well as with respect to molecular markers used to detect quantitative trait loci (QTLs). Applications of principles discussed in thetext are illustrated by numerous examples of worked problems, using actual data. Each chapter end, in addition to a complete summary, offers several problems for solution, to reinforce and further develop the concepts.

    Hamilton, widely acknowledged as the most important theoretical biologist of the 20th century. His papers continue to exert an enormous influence and they are now being republished for the first time. This first volume contains all of Hamilton's publications prior to 1981, a set especially relevant to social behavior, kinship theory, sociobiology, and the notion of `selfish genes'. Each paper is introduced by an autobiographical essay written especially for this collection. Accessible to non-specialists, this fascinating volume features several of the most read and famous papers of modern biology.

    Features completely revised and updated material and new chapters, incorporating the most recent advances in the field since publication of the third edition in 2007.Provides thought questions, problems, and suggested reading lists for each chapter that test student comprehension and encourage further research.Provides descriptive background information, detailed experimental methods, examples of genetic analyses, and advanced material relevant to current applications of molecular genetics.Serves as an invaluable text for anyone working in the fields of microbiology, genetics, biochemistry, bioengineering, medicine, molecular biology, and biotechnology. It is also essential reading for scientists in all fields of biology, many of whom depend upon the concepts and techniques covered in this book.

    Here, at 321 degrees below zero--a temperature at which life abandons its vital dance and enters limbo, but without dying--are some 30,000 vials holding 60 billion living forms in suspended animation, including mouse kidney cells, turkey blood cells, armadillo spleen cells, and some 40 billion human cells. These cultured cells are essential to modern biological research--in fact, cells today are the most intimately studied life forms in all of science, for both practical and philosophical reasons. For one, all disease--from cancer and the common cold, to arthritis and AIDS--stems from cells gone awry. And cell research not only promises a cure for a wide variety of disease--it also holds the key to the mystery of life itself. In Life Itself, Boyce Rensberger, science writer for The Washington Post, takes readers to the frontlines of cell research with some of the brightest investigators in molecular, cellular, and developmental biology. Virtually all the hottest topics in biomedical research are covered here, such as how do cells and their minute components move? How do the body's cells heal wounds? What is cancer? Why do cells die? And what is the nature of life? Readers discover that--contrary to what we may have concluded from pictures in our high school textbooks--cells teem with activity and that, inside, they are more crowded with components than the inside of a computer. We learn that scientists now know of at least ten molecular motors that move things about inside the cell--in most cells, this motion is short because the cell is tiny, but in the single-celled nerve fibers that run from the base of the spinal cord to the toes (measuring three or four feet in an adult human), molecular motors can take several days to make the trip. Rensberger describes the many fascinating kinds of cells found in the body, from neural crest cells (early in embryonic development, these cells crawl all over the embryo to the sites where they will pursue their fate--as nerve cells, or cartilage, or skin), to dust cells (nomadic cells in the lung that swallow and store indigestible particles, then migrate to the gullet where they themselves are swallowed and digested), to natural killer cells (millions of which roam the body looking for cancerous cells). We meet many of the scientists who have pioneered cell research, such as Rita Levi-Montalcini--an Italian who, shut out of her lab during World War II, continued to experiment in her bedroom at home, making the discovery (nerve growth factor) for which she won the Nobel Prize--and American Leonard Hayflick, who proved that all human cells (except cancer cells) invariably die after about fifty divisions. Rensberger also provides an illuminating discussion of AIDS--revealing exactly why this virus is so difficult to defeat--and of cancer, explaining that before cancer can start, a whole series of rare events must occur, events so unlikely that it seems a wonder that anyone gets cancer at all. The solutions to the most pressing challenges facing scientists today--from the efforts to conquer disease to the quest to understand life itself--will be found in the innermost workings of the cell. In Life Itself, Boyce Rensberger paints a colorful and fascinating portrait of modern research in this vital area, an account which will enthrall anyone interested in state-of-the-art science or the incredible workings of the human body.