This edition published in the UK and the USA in 2011 by Icon Books Ltd, Omnibus Business Centre, 39–41 North Road, London N7 9DP email: info@iconbooks.com www.introducingbooks.com Sold in the UK, Europe and Asia by Faber & Faber Ltd, Bloomsbury House, 74–77 Great Russell Street, London WC1B 3DA or their agents Distributed in South Africa by Jonathan Ball, Office B4, The District, 41 Sir Lowry Road, Woodstock 7925 Distributed in Australia and New Zealand by Allen & Unwin Pty Ltd, PO Box 8500, 83 Alexander Street, Crows Nest, NSW 2065 Distributed in the USA by Publishers Group West, 1700 Fourth Street, Berkeley, CA 94710 Distributed in Canada by Publishers Group Canada, 76 Stafford Street, Unit 300 Toronto, Ontario M6J 2S1 Previous edition published in the UK and Australia in 1996 under the title Genetics for Beginners and in 2000 and 2005 under the current title ISBN: 978-184831-295-1 Text copyright © 1993 Steve Jones Illustrations copyright © 2013 Icon Books Ltd The author and artist have asserted their moral rights. Originating editor: Richard Appignanesi No part of this book may be reproduced in any form, or by any means, without prior permission in writing from the publisher. Printed and bound in the UK by Clays Ltd, St Ives plc