In PCR, the temperature of about 95 °C is used to

  1. separate the DNA strands
  2. bind primers
  3. activate ligase
  4. extend new strands
Answer

A) separate the DNA strands

Denaturation breaks H-bonds. AS & A Level Biology · Topic 19 Genetic Technology · 19.1 Principles of genetic technology

Biology MCQ · More A Level Biology: Genetic technology MCQs · Practise