[Campbell Biology P.296] According to Figure 12.17 a , what signal or lack thereof causes a ... | Practice Question

According to Figure 12.17 a , what signal or lack thereof causes a cell to exit the cell cycle and enter the G0 state at the G1 checkpoint?

  • A: Presence of a stop signal
  • B: Absence of a go-ahead signal
  • C: Completion of DNA replication
  • D: Attachment of all chromosomes to spindle fibers

Explanation

Figure 12.17 a explicitly states: "In the absence of a go-ahead signal, a cell exits the cell cycle and enters G0, a nondividing state."