Question: The third step of PCR is called "extension" and involves making many copies of the book-ended sequence. People often say they are "amplifying" the samples. To do this you must add loose DNA nucleotides AND a solution with special enzymes that perform the extension process (people can buy these from a biotech company.) i. What is the name of the enzymes that do the extension process? Hint: in general, the same enzyme that copies all of your DNA before cell division. ii. These enzymes are adapted to operate in high heat and are from a particular species of bacteria (Thermus aquaticus). That general habitat do they live in? Need Assignment Help?