Polymerase Chain Reaction in Biochemistry
How many ds DNA molecule can be produced, which comprise precisely the target region in double strand form during 4th cycle of PCR?

Four ds DNA molecule
Three ds DNA molecule
Two ds DNA molecule
Eight ds DNA molecule

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Polymerase Chain Reaction in Biochemistry
Southern blotting involves

electrophoresis of DNA molecules and then blotting the separated DNA bands followed by incubation
electrophoresis of DNA molecules followed by incubation
electrophoresis of RNA molecules and then blotting the separated RNA bands followed by incubation
electrophoresis of DNA molecules and then blotting the separated RNA bands followed by incubation

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