The two strands of DNA are antiparallel, meaning

  1. they run in the same direction
  2. they never pair
  3. they are identical
  4. they run in opposite directions (5′→3′ and 3′→5′)
Answer

D) they run in opposite directions (5′→3′ and 3′→5′)

Antiparallel strands. 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