MHT CET Medical202626 April 2026Morning ShiftBiologyMolecular Basis of InheritanceActual
The enzyme / proteins that prevent/s recoiling of the separated strands of DNA during replication is __________.
Options
- Atopoisomerase
- Bhelicase
- CSSB proteins
- Dpolymerase
Correct answer
C. SSB proteins
Step-by-step solution
During DNA replication, the enzyme helicase unwinds the DNA double helix by breaking the hydrogen bonds between the complementary bases. Once the strands are separated, Single-Strand Binding (SSB) proteins bind to the exposed single strands. This prevents the separated strands from re-annealing or recoiling back into a double helix, keeping them stable and accessible for the DNA polymerase to synthesize the new complementary strands. Topoisomerase relieves the torsional strain or supercoiling ahead of the replicati