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The Agile Gene: How Nature Turns on Nurture by Matt Ridley
Book Summary InformationAuthor: Matt Ridley Edition: Paperback Audio: English (Unknown); English (Original Language); English (Published) Published: 2004-07-06 ISBN: 006000679X Number of pages: 352 Publisher: Harper Perennial
Book Reviews of The Agile Gene: How Nature Turns on NurtureBook Review: Twisting linguistics [biologically] Summary: 5 Stars
Many similes have been used to introduce us to our genome; our DNA. It's a plan. It's a recipe. It's a blueprint. It's a code. Ridley shows how these metaphors miss the point - they're all too fixed to compare with the dynamics of the fundamental molecule of life. He shows how our genome, indeed, the genome common to all life, uses the same elements to say many things. Instead of terms identifying fixed elements, he suggests the image of language. The genome has a limited lexicon of phrases with which to build bodies and personalities, yet manages an immense variation in the results. How like a chimpanzee are you?, he asks. Depending on how you make the comparison - very little or very much. If you count the entire number of "base pairs" making up chimpanzees and humans, the difference is minimal - perhaps 30 thousand out of 3 billion. If, instead, you visit the zoo [or, better, Gombe] the differences are striking.
In Ridley's view, the striking differences are due to "word order" contained in the genome. All the words are essentially the same, but different locations and different interactions produce different characteristics. Including behaviour. In the six or seven million years since the chimpanzee-human line diverged, lifestyles, diet, social structure and living environment have helped guide how the genome produces a body and how that body will likely act in a given situation. Environment and the genome, then, are in a constant interactive flux. They feed signals through the organism to determine whether the organism will survive and reproduce. Nature isn't in the driver's seat, and if we fail to learn or adapt to the vagaries of environment, we won't survive to have descendants. Nature, then, is achieved via nurture.
All this should seem self-evident in today's world, but Ridley shows we have yet to fully understand and accept our role in Nature. There are few writers as articulate and expressive in dealing with these issues as Ridley. His grasp of the science involved is firm, yet he maintains a conversational tone throughout the narrative. While you will encounter much that is new to you in this book, you may close it [the first time], confident that his explanations have neither overwhelmed you nor left you unsatisfied. Of course, as Ridley points out, there is much work remaining in understanding the genome's impact on life. With luck, this book may impel others to follow his lead and uncover more of life's mysteries. [stephen a. haines - Ottawa, Canada]
Summary of The Agile Gene: How Nature Turns on NurtureArmed with extraordinary new discoveries about our genes, acclaimed science writer Matt Ridley turns his attention to the nature-versus-nurture debate in a thoughtful book about the roots of human behavior. Ridley recounts the hundred years' war between the partisans of nature and nurture to explain how this paradoxical creature, the human being, can be simultaneously free-willed and motivated by instinct and culture. With the decoding of the human genome, we now know that genes not only predetermine the broad structure of the brain, they also absorb formative experiences, react to social cues, and even run memory. They are consequences as well as causes of the will. In the follow-up to his bestseller, Genome, Matt Ridley takes on a centuries-old question: is it nature or nurture that makes us who we are? Ridley asserts that the question itself is a "false dichotomy." Using copious examples from human and animal behavior, he presents the notion that our environment affects the way our genes express themselves. Ridley writes that the switches controlling our 30,000 or so genes not only form the structures of our brains but do so in such a way as to cue off the outside environment in a tidy feedback loop of body and behavior. In fact, it seems clear that we have genetic "thermostats" that are turned up and down by environmental factors. He challenges both scientific and folk concepts, from assumptions of what's malleable in a person to sociobiological theories based solely on the "selfish gene." Ridley's proof is in the pudding for such touchy subjects as monogamy, aggression, and parenting, which we now understand have some genetic controls. Nevertheless, "the more we understand both our genes and our instincts, the less inevitable they seem." A consummate popularizer of science, Ridley once again provides a perfect mix of history, genetics, and sociology for readers hungry to understand the implications of the human genome sequence. --Therese Littleton
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