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MBBS QUESTION #10366
Question 1
DNA replication proceeds semiconservatively, meaning that:
  • Each of the two resulting daughter DNA double helices consists of one original (parental) strand paired with one newly synthesized strand✔️
  • Both daughter molecules are entirely newly synthesized, with no parental strands retained in either
  • Both daughter molecules retain both original parental strands completely unchanged
  • Replication produces only RNA transcripts rather than new DNA molecules
Correct Answer Explanation
The semiconservative model (confirmed by the Meselson-Stahl experiment) shows that each daughter DNA molecule conserves one intact parental strand, serving as the template, paired with one newly synthesized complementary strand.