PCR is an advanced molecular biological technique used to amplify a segment of DNA by producing thousands to millions of copies of that segment within a short period of time, allowing for further analytical studies. It works by using a PCR machine to replicate the targeted DNA segment in multiple cycles of heating and cooling.

3. What is PCR ?
Definition – It is also an
advanced molecular biological
technique to amplify ( produce
a large number of copies ) of a
DNA segment generating
thousand to million of copies
with in short period for further
analytical studies .

5. PCR Machine