Cambridge International A Level Biology Revision Guide

Acknowledgements
Meiosis” in Tuatara: Journal of the Biological Society of Victoria University of Wellington, 18 (1), 1970, by J. M. Martin
http://nzetc.victoria.ac.nz/tm/scholarly/Bio18Tuat01-fig-Bio18Tuat01_007a.html; 16.22 Freidrich Stark/Alamy;
Chapter 17 Don Johnston, All Canada Images/Getty Images; 17.1 Richard Becker/Alamy; 17.4 Juniors Bildarchiv
GmbH/Alamy; 17.6 Popperfoto/Getty Images; 17.7 Mark Boulton/Alamy; 17.10 Dick Roberts/Holt Studios; 17.10
Dick Roberts/Holt Studios; 17.11 Eric Dragesco/ardea; 17.12 Stan Levy/SPL; 17.13a,b John Mason/ardea; 17.16
Cecil H Fox/SPL; 17.17a Pat Morris/ardea; 17.17b J B Bottomley/ardea; 17.19 Nigel Cattlin/Alamy; 17.20, 17.22 The
Connecticut Agricultural Experiment Station; 17.21 David Ionut/Shutterstock; 17.23 florapix/Alamy; 17.24 John W.
Bova/SPL; 17.25 age fotostock/Alamy; 17.27 Martin Harvey/NHPA; 17.28 Robert Thompson/NHPA; Chapter 18
Dennis Frates/Alamy; 18.1, 18.6, 18.40 Richard Fosbery; 18.2 LOOK Die Bildagentur de Fotografen GmbH/Alamy;
18.3 Sarah8000/iStock; 18.4 David Wall Photo/Lonely Planet Images/Getty Images; 18.5 GlobalIP/iStock; 18.7 Philippe
Psaila/SPL; 18.9 Martyn F Chillmaid/SPL; 18.10 goldenangel/iStock; 18.14 irabel8/Shutterstock; 18.15 NOAA PMEL
Vents Program/SPL; 18.16 Visuals Unlimited/Getty Images; 18.17 Eye of Science/SPL; 18.18, 18.19 Wim Van Egmond/
Visuals Unlimited Inc/SPL; 18.21 Chris Howe/Wild Places Photography/Alamy; 18.22 Frans Landting Studio/Alamy;
18.23 Fuse/Thinkstock; 18.24 Rainer von Brandis/iStock; 18.25 Science Picture Co/Getty Images; 18.26 Nigel Cattlin/
Visuals Unlimited/Corbis; 18.27 jgareri/iStock; 18.28 Mark Conlin/Alamy; 18.29 oversnap/iStock; 18.30 Jaroslav
Frank/iStock; 18.31 Ariadne Van Zandbergen/Alamy; 18.32 Imaginechina/Corbis; 18.33 James King-Holmes/SPL;
18.34 Frans Lanting, Mint Images/SPL; 18.35 YinYang/iStock; 18.36 commablack/iStock; 18.37 Atthapol Saita/
Thinkstock; 18.38 scubazoo/SuperStock/Corbis; 18.39 AFP/Getty Images; 18.42 Biophoto Assocatiates, Chapter 19
Peter Menzel/SPL; 19.1 Science Picture Co/SPL; 19.6 Dr Charles Mazel/Visuals Unlimited, Inc/SPL; 19.7 Philippe
Psaila/SPL; 19.8 Hank Morgan/SPL; 19.14 TEK Images/SPL; 19.15 Alfred Pasieka/SPL; 19.17 Saturn Stills/SPL; 19.18
Will & Denise McIntyre/SPL; 19.20a optimarc/Shutterstock; 19.20b Chris Leachman/Shutterstock; 19.21a Dr William
Weber/SPL; 19.21b Nigel Cattlin/Alamy; 19.22 Geoff Jones; 19.23 Courtesy Golden Rice Humanitarian Board www.
goldenrice.org; 19.24 AquaBounty Technologies, used with permission; 19.25 Andrew Fox/Alamy; Practice Test 2
Blend Image/Alamy
SPL = Science Photo Library
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EoCQ = End of chapter question
t = top, c = centre, b = bottom
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