.co.uk
  
evolutionem

A D MACKAY © All Rights Reserved

PREVIOUS
NEXT
CONTENTS

A profound and rapid change of form, however, can take place, by the mechanism known as reversion. This happens when there is a sudden switch to older models of tissue or organ types, during an animal’s development. This phenomenon happens sporadically and allows variations which may be more suitable to a new set of circumstances.

 

88
Page 87
Page 83
Page 89