Evolution by Gene Duplication

Authors: Ohno, Susumu

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About this book

It is said that "necessity is the mother of invention". To be sure, wheels and pulleys were invented out of necessity by the tenacious minds of upright citi­ zens. Looking at the history of mankind, however, one has to add that "Ieisure is the mother of cultural improvement". Man's creative genius flourished only when his mind, freed from the worry of daily toils, was permitted to entertain apparently useless thoughts. In the same manner, one might say with regard to evolution that "natural selection mere(y tnodifted, while redundanry created". Natural selection has been extremely effective in policing alleHe mutations which arise in already existing gene loci. Because of natural selection, organisms have been able to adapt to changing environments, and by adaptive radiation many new species were created from a common ancestral form. Y et, being an effective policeman, natural selection is extremely conservative by nature. Had evolution been entirely dependent upon natural selection, from a bacterium only numerous forms of bacteria would have emerged. The creation of metazoans, vertebrates and finally mammals from unicellular organisms would have been quite impos­ sible, for such big leaps in evolution required the creation of new gene loci with previously nonexistent functions. Only the cistron which became redun­ dant was able to escape from the relentless pressure of natural selection, and by escaping, it accumulated formerly forbidden mutations to emerge as a new gene locus.

Table of contents (22 chapters)

  • Introduction

    Ohno, Dr. Susumu

    Pages 1-2

  • Perpetuation of the Germ Line

    Ohno, Dr. Susumu

    Pages 3-4

  • Replication of Nucleic Acids on the Basis of A-T, G-C Complementality and the Origin of Life

    Ohno, Dr. Susumu

    Pages 4-15

  • Chromosomes of Eukaryotes

    Ohno, Dr. Susumu

    Pages 15-20

  • Mutation as a Change in the Base Sequence of a DNA Cistron

    Ohno, Dr. Susumu

    Pages 21-26

Buy this book

eBook $89.00
price for Mexico (gross)
  • ISBN 978-3-642-86659-3
  • Digitally watermarked, DRM-free
  • Included format: PDF
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Softcover $119.99
price for Mexico
  • ISBN 978-3-642-86661-6
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
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Bibliographic Information

Bibliographic Information
Book Title
Evolution by Gene Duplication
Authors
Copyright
1970
Publisher
Springer-Verlag Berlin Heidelberg
Copyright Holder
Springer Science+Business Media New York
eBook ISBN
978-3-642-86659-3
DOI
10.1007/978-3-642-86659-3
Softcover ISBN
978-3-642-86661-6
Edition Number
1
Number of Pages
XV, 160
Number of Illustrations
20 b/w illustrations
Topics