The genome's been mapped.
But what does it mean?
Arguably the most significant scientific discovery of the new century, the mapping of the twenty-three pairs of chromosomes that make up the human genome raises almost as many questions as it answers. Questions that will profoundly impact the way we think about disease, about longevity, and about free will. Questions that will affect the rest of your life.
Genome offers extraordinary insight into the ramifications of this incredible breakthrough. By picking one newly discovered gene from each pair of chromosomes and telling its story, Matt Ridley recounts the history of our species and its ancestors from the dawn of life to the brink of future medicine. From Huntington's disease to cancer, from the applications of gene therapy to the horrors of eugenics, Matt Ridley probes the scientific, philosophical, and moral issues arising as a result of the mapping of the genome. It will help you understand what this scientific milestone means for you, for your children, and for humankind.
HSoon we'll know what's in our genes: next year, the Human Genome Project will have its first-draft map of our 23 chromosomes. Ridley (The Red Queen; The Origins of Virtue) anticipates the genomic news with an inventively constructed, riveting exposition of what we already know about the links between DNA and human life. His inviting prose proposes "to tell the story of the human genome... chromosome by chromosome, by picking a gene from each." That story begins with the basis of life on earth, the DNA-to-RNA-to-protein process (chapter one, "Life," and also chromosome one); the evolution of Homo sapiens (chromosome two, which emerged in early hominids when two ape chromosomes fused); and the discovery of genetic inheritance (which came about in part thanks to the odd ailment called alkaptonuria, carried on chromosome three). Some facts about your life depend entirely on a single gene--for example, whether you'll get the dreadful degenerative disease Huntington's chorea, and if so, at what age (chromosome four, hence chapter four: "Fate"). But most facts about you are products of pleiotropy, "multiple effects of multiple genes," plus the harder-to-study influences of culture and environment. (One asthma-related gene--but only one--hangs out on chromosome five.) The brilliant "whistle-stop tour of some... sites in the genome" passes through "Intelligence," language acquisition, embryology, aging, sex and memory before arriving at two among many bugbears surrounding human genetic mapping: the uses and abuses of genetic screening, and the ongoing debate on "genetic determinism" and free will. Ridley can explain with equal verve difficult moral issues, philosophical quandaries and technical biochemistry; he distinguishes facts from opinions well, and he's not shy about offering either. Among many recent books on genes, behavior and evolution, Ridley's is one of the most informative. It's also the most fun to read.