A tool that Alex Jeffries used to cut up DNA was
A) a restriction endonuclease
B) Taq polymerase
C) a quencher
D) a probe
E) a thermocycler

Question

Quizplus · Accepted Answer

A restriction endonuclease is an enzyme that cuts DNA at specific sequences, creating fragments that can be analyzed or used for cloning. Taq polymerase is a DNA polymerase used in PCR, a technique that amplifies DNA fragments but does not cut them. A quencher is a molecule that reduces the intensity of a fluorescent signal in molecular biology assays. A probe is a labeled DNA or RNA molecule used to detect specific sequences in a sample. A thermocycler is a machine used in PCR to amplify DNA fragments by temperature cycling. Therefore, the best choice is A, as it describes a tool used for cutting DNA at specific sites.

A Tool That Alex Jeffries Used to Cut Up DNA