Includes bibliographical references (page 47) and index.
Contents:
Life forms -- The beginning of life -- Evolution -- The structure of life -- Into the nucleus -- DNA.
Summary:
Over 3.5 billion years ago, a complex chemical appeared in the warm oceans of a young Earth. The chemical had a startling quality: it could reproduce itself. Over vast periods of time this ancient chemical gave rise to more than five million widely varied forms of life. This book tells the story of how life arose and evolved. It describes the discoveries of scientists who have tried to understand the very origins of life and crack the code that governs all living things.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.