1/23/2024 0 Comments Magnet science fair projects![]() ![]() PCR is a very important step in the discovery and manufacturing of genes that become important pharmaceuticals, like the insulin gene. If these first three steps are repeated 30 times, a scientist can make 1 billion copies of a single piece of DNA! That provides the scientist with plenty of DNA material to clone and study. PCR is like a copy machine for DNA! (Copyright © The Royal Swedish Academy of Sciences, 2003) Finally, the whole process is repeated until the DNA molecule segment has been copied enough times.įigure 2. Next, the temperature is slightly raised and the enzyme DNA polymerase is added which build copies of the DNA strands starting at the previously added primer. Then, the strands are cooled and a synthetic DNA strand called a primer is added that attaches to the end of each individual DNA strand. ![]() Starting with an extracted segment of a DNA molecule, it is first heated until the two strands that make up the DNA are separated.
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