Question

Which one is a true statement regarding DNA polymerase used in PCR?

Options

• It is used to ligate introduction DNA in recipient cells. 

• It serves as a selectable 

• It is isolated from a virus.

• It remains active at high temperature

Answer 1

It remains active at high temperatures.

Explanation:

Polymerase chain reaction (PCR) is a technique that uses two sets of primers and the enzyme DNA polymerase to amplify a DNA segment or to synthesize many copies of a gene (or DNA) of interest in vitro. This enzyme was obtained from the bacteria thermos aquaticus and remains active at high temperatures, however high temperatures cause denaturation of double-standard DNA.