A diagram of the cell cycle is shown to the right. It maps the phases of the cel

Question

A diagram of the cell cycle is shown to the right. It maps the phases of the cell cycle and the checkpoints by which certain criteria must be met for the cell cycle to advance to the next phase. Select all the statements below that describe how a cell may respond at a checkpoint. The cell may find errors and delay the cyde until the errors are corrected. The cell cycle can skip mitosis and continue to the Gi phase if an error is detected. The cell can reverse the cyde to correct a mistake. The cell may exit the cell cycle and enter a non-dividing state. The cell may commit to enter the next phase of the cell cycle.

Explanation / Answer

The correct options are,

The cell may find errors and delay the cycle until the errors are corrected.

The cell may exit the cell cycle and enter a non-dividng state

The cell may commit to enter the next phase of the cell cycle (results in the occurance of mutaions).

Check point genes are the genes, which regulate the cell cycle process by interfering at the interphase part of the cell cycle. Check point genes, which inhibit mitosis, are called tumor suppressor genes, because mutations in these genes or missing of these cause tumours to occur. So, fail to regulate the cell cycle results in uncontrolled growth that may become cancerous.

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