http://worldcat.org/entity/work/id/793969276

Biology's first law the tendency for diversity and complexity to increase in evolutionary systems

Life on earth is characterized by three striking phenomena that demand explanation: adaptation--the marvelous fit between organism and environment; diversity--the great variety of organisms; and complexity--the enormous intricacy of their internal structure. Natural selection explains adaptation. But what explains diversity and complexity? Daniel W. McShea and Robert N. Brandon argue that there exists in evolution a spontaneous tendency toward increased diversity and complexity, one that acts whether natural selection is present or not. They call this tendency a biological law--the Zero-Force Evol.

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