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Explain three steps involved in polymera...

Explain three steps involved in polymerase chain reaction.

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Three steps involved in polymerase chain reaction :
`*` Denaturation : Typically at about `93-95^(@)`C for human genomic DNA. DNA are separated by heat denaturation.
`*` Primer annealing : In this step primer is attached to the complementary strands on the single stranded DNA.
`*` DNA synthesis : DNA polymerase extends the primers and forms double stranded DNA.
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