Arduino PCR (thermal cycler) for under $85

This tutorial will show you how to make a thermal cycler from scratch for about $85. In short, PCR (polymerase chain reaction) amplifies bits of DNA, creating millions of copies of a target sequence. You can use it to test a DNA sample for a specific gene, for instance, to check for genetic modification in food and for hereditary gene testing. During PCR, a mixture of DNA, primer and DNA polymerase is cycle ...

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