defined:

A fast, inexpensive technique for making an unlimited number of copies of any piece of DNA. Sometimes called "molecular photocopying," PCR has had an immense impact on biology and medicine, especially genetic research.

explained:

Listen to a detailed explanation.

Dr. Leslie Biesecker, of the National Human Genome Research Institute's Laboratory of Genetic Disease Research, defines polymerase chain reaction (PCR).

illustrated:

View illustration

related
terms:

cell, deoxyribonucleic acid (DNA)

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