Biochemistry
Edition: 2Rev Ed edition
Publisher: John Wiley & Sons Inc
Published: November 9, 2001
Format: Hardcover
ISBN-13: 9780471204176
Subjects: Chemistry
First sentence: gets that life as we know it arose but once (if life arose more than once, the other forms must have rapidly died out, possibly because they were "eaten" by the present form). Thus, by comparing the corresponding genetic messages of a wide variety of modern organisms it may be possible to derive reasonable models of the primordial messages from which they have descended.