DNA ligase

  1. joins the sugar–phosphate backbones of DNA fragments
  2. makes primers
  3. cuts DNA
  4. separates DNA strands
Answer

A) joins the sugar–phosphate backbones of DNA fragments

Ligase seals phosphodiester 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