The lagging strand is made discontinuously because

  1. it has no template
  2. it contains uracil
  3. DNA polymerase can only add nucleotides to the 3′ end
  4. helicase works slowly
Answer

C) DNA polymerase can only add nucleotides to the 3′ end

Synthesis is only 5′→3′. AS & A Level Biology · Topic 6 Nucleic Acids and Protein Synthesis · 6.1 Structure of nucleic acids and replication of DNA

Biology MCQ · More A Level Biology: Nucleic acids and protein synthesis MCQs · Practise