Consider the cell cycle shown below. A cell will stop dividing and go into G0, the resting phase, if it receives the proper signal at the G1 checkpoint.
What would happen if the G1 checkpoint regulation failed?
(1 point)
Responses
The cell would enter into G0, the resting phase.
The cell would enter into G0, the resting phase.
The cell would continue in the cycle and divide uncontrollably, which may lead to cancer.
The cell would continue in the cycle and divide uncontrollably, which may lead to cancer.
The checkpoint is not important, the cell would go on to the next phase
The cell would continue in the cycle and divide uncontrollably, which may lead to cancer.
The correct answer is:
The cell would continue in the cycle and divide uncontrollably, which may lead to cancer.
To answer this question, we need to understand the role of the G1 checkpoint in the cell cycle. The G1 checkpoint is a critical control point that occurs at the end of the G1 phase. It is responsible for ensuring that the cell is ready to progress into the S phase, where DNA replication occurs.
If the G1 checkpoint regulation fails, it means that the cell does not receive the proper signal to proceed with the cell cycle. In this case, the cell would typically enter the G0 phase, also known as the resting phase. In G0, the cell remains in a non-dividing state and performs its specialized functions.
However, there is another possible outcome if the G1 checkpoint regulation fails. Instead of entering G0, the cell may continue to progress in the cell cycle and divide uncontrollably. This uncontrolled cell division can lead to the formation of a tumor, which has the potential to develop into cancer.
Therefore, the correct answer to the question is: "The cell would continue in the cycle and divide uncontrollably, which may lead to cancer."