"Body Doubles: Cloning Plants and Animals looks into the make-up of chromosomes and DNA and shows how scientists have taken the natural cloning process of plants and animals into their own hands. Learn how genes can be switched on and off, how micropropogation and frozen zoos have saved plant and animal species from extinction, and how Dolly the sheep was created. Discuss whether or not biofactories should use genetically modified animals to assist with drug production, if farm animals should be cloned, and discover the part cloning plays in the treatment of Parkinson's disease and leukemia." (Publisher)