John Gurdon claims to have cloned frogs from adult cells.	Establishment of the complete genetic code.	Enzyme DNA ligase isolated.	First restriction enzyme isolated.	Paul Berg creates the first recombinant DNA molecules.	Karl Illmensee claims to have created mice with only one parent.	Karl Illmensee makes claim to have cloned three mice.
		J.B.S. Haldane coins the term 'clone.'		Shapiero and Beckwith isolate the first gene.	Cohen and Boyer create first recombinant DNA organisms.	The release of David Rorvik's book, In His Image: The Cloning of a Man, sparks a worldwide debate on cloning ethics.	U.S. Supreme Court rules live, human made organisms are patentable material.