Retinoblastoma gene regulates?: (A) G1-s phase, (B) G2 to M phase, (C) G0 to G 1 Phase, (D) S-G2 Phase
Answer is A. harshmohan textbook of pathology 7th edition. *active form of RB gene :it blocks cell division by binding to the transcription factor E2F and this inhibits the cell from transcription of cell cycle related gene there by inhibiting the cell cycle at G1.