Arrival of the Fittest

Arrival of the Fittest

Solving Evolution's Greatest Puzzle

eBook - 2014
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"Natural selection can preserve innovations, but it cannot create them. Nature's many innovations--some uncannily perfect--call for natural principles that accelerate life's ability to innovate."

Darwin's theory of natural selection explains how useful adaptations are preserved over time. But the biggest mystery about evolution eluded him. As genetics pioneer Hugo de Vries put it, "natural selection may explain the survival of the fittest, but it cannot explain the arrival of the fittest."

Can random mutations over a mere 3.8 billion years really be responsible for wings, eyeballs, knees, camouflage, lactose digestion, photosynthesis, and the rest of nature's creative marvels? And if the answer is no, what is the mechanism that explains evolution's speed and efficiency?

In Arrival of the Fittest , renowned evolutionary biologist Andreas Wagner draws on over fifteen years of research to present the missing piece in Darwin's theory. Using experimental and computational technologies that were heretofore unimagined, he has found that adaptations are not just driven by chance, but by a set of laws that allow nature to discover new molecules and mechanisms in a fraction of the time that random variation would take.

Consider the Arctic cod, a fish that lives and thrives within six degrees of the North Pole, in waters that regularly fall below 0 degrees. At that temperature, the internal fluids of most organisms turn into ice crystals. And yet, the arctic cod survives by producing proteins that lower the freezing temperature of its body fluids, much like antifreeze does for a car's engine coolant. The invention of those proteins is an archetypal example of nature's enormous powers of creativity.

Meticulously researched, carefully argued, evocatively written, and full of fascinating examples from the animal kingdom, Arrival of the Fittest offers up the final puzzle piece in the mystery of life's rich diversity.
Publisher: New York, New York : Current, 2014.
ISBN: 9781101628164
1101628162
Branch Call Number: ELECTRONIC RESOURCE
Characteristics: 1 online resource

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johnsankey
Aug 25, 2015

The work described in this book is a revelation to me and my fellow scientists concerned with evolution. For a layman it will be difficult to read with its long technical passages, but for those interested in the origins of life, it's worth the effort even if you have to skim portions. ? shows that life's origin and evolution are vastly more likely than previously thought, because millions of genotypes (physical arrangements of molecules) can produce the same phenotype (an effective functioning organism). Further, he shows that many mutations can leave an organism still capable of life, while still exploring a wide range of phenotypes, and that this is true for any molecule that folds up in order to perform its function - enzymes, proteins - and for RNA (almost certainly the first form of true life).

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