Life is a complex, diversified phenomenon comprising species of many different kinds, some of them only very distantly related. Nonetheless, the basic system on which this diversity is built is common to all of life. A few principles and characteristics are shared, including the way biological "memory" evolves and is preserved in DNA, the cell, and a small set of basic genetic mechanisms that make it and all of life possible.
Genetics and the Logic of Evolution, by Kenneth M. Weiss and Anne V. Buchanan. ISBN 0-471-23805-8 Copyright © 2004 John Wiley & Sons, Inc.
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