Clones and Chimeras

  • Henry Nicholls
Part of the Macmillan Science book series (MACSCI)


‘Cloning could be considered when all other options have been exhausted’, announce the panels around George’s enclosure. They did it for Dolly; why not just create an exact replica of George, gene for gene? In theory, it’s possible. It even sounds fairly straightforward. It isn’t.


Extinct Species Therapeutic Cloning Reproductive Cloning Siberian Tiger Roslin Institute 


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Notes and sources

  1. ‘Cloning could be considered …’: Charles Darwin Research Station (2002)Google Scholar
  2. Overview of cloning history: see Brownlee, C, ( Scholar
  3. Spemann’s salamander: Spemann (1938)Google Scholar
  4. Briggs and King’s frogs: Briggs and King (1952)Google Scholar
  5. Gurdon’s frog clone: Gurdon (1962)Google Scholar
  6. Cloning Dolly: Wilmut et al. (1997)Google Scholar
  7. Cloning endangered species: Ryder (2002); Critser et al. (2003)Google Scholar
  8. San Diego’s Frozen Zoo: see; Oliver Ryder, personal communicationGoogle Scholar
  9. ‘It has the potential of minimizing loss …’: Ryder and Benirschke (1997)Google Scholar
  10. ‘flagship research’ and ‘exciting leading-edge science of international significance’: Anon. (1999) Cloning of extinct huia bird approved, Cable News Network, 20 July 1999Google Scholar
  11. Cloning the thylacine: see
  12. ‘If we’re lucky enough we’ll find it’: Larry Agenbroad, personal communicationGoogle Scholar
  13. ‘The condition of the skull …’: Agenbroad, personal communication ‘the first complete sequence of the mitochondrial genome …’: Anon. (2005) The sequence of the complete mitochondrial DNA of the Yukagir Mammoth has been determined! EXPO 2005, 17 JuneGoogle Scholar
  14. ‘It’s full of holes …’: Crichton, M. and Koepp, D. (1993)Google Scholar
  15. Degradation of ancient DNA: Alan Cooper, personal communicationGoogle Scholar
  16. Cloning the argali: White et al. (1999)Google Scholar
  17. Cloning the gaur: Lanza et al. (2000)Google Scholar
  18. ‘This study presents exciting opportunities …’: Lanza et al. (2000)Google Scholar
  19. Cloning the mouflon: Loi et al. (2001); Pasqualino Loi, personal communicationGoogle Scholar
  20. Perry’s chick: Perry (1988)Google Scholar
  21. Creating avian chimeras: Petitte et al. (1997, 2004); James Petitte, personal communication; see also Graves (2001)Google Scholar
  22. Fishy chimeras: Takeuchi et al. (2004)Google Scholar
  23. Cloning mules: Don Jacklin and Gordon Woods, personal communication ‘Once the cameras start clicking …’: Gordon Woods, personal communication Brave New World: Huxley (1932)Google Scholar
  24. ‘The prophecies I made in 1931 are coming true …’: Huxley (1958)Google Scholar

Copyright information

© Henry Nicholls 2010

Authors and Affiliations

  • Henry Nicholls

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