Annealing (biology)

Annealing (biology)

Annealing, in genetics, means for DNA or RNA to pair by hydrogen bonds to a complementary sequence, forming a double-stranded polynucleotide (See Nucleic acid hybridization). The term is often used to describe the binding of a DNA probe, or the binding of a primer to a DNA strand during a polymerase chain reaction (PCR). The term is also often used to describe the reformation (renaturation) of complementary strands that were separated by heat (thermally denatured).It is commonly used to describe the reaction that takes place when two or more strands are fused by means of high radiation


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