Question

If a cell passes G1 checkpoint without a control due to a malfunction of proteins at the G

checkpoint, which of the following could happen to the cell? (three correct answers)
it stops dividing and permanently exits the cell cycle
it might divide repeatedly when it is not supposed to divide
it programs its own death
it would replicate damaged DNA
it could initiate a cancerous growth

Answer 1

If a cell passes G1 checkpoint without control, it may divide when it shouldn't, initiate cancerous growth, and replicate damaged DNA.

Step-by-step explanation:

If a cell passes the G1 checkpoint without proper control due to a malfunction of proteins at the checkpoint, there could be several consequences:

1. The cell might divide repeatedly when it is not supposed to divide: Without proper control, the cell may continue to divide and replicate its DNA in an unregulated manner, leading to excessive cell growth.
2. The cell could initiate a cancerous growth: Uncontrolled cell division and replication can result in the formation of a tumor or cancerous growth in the body.
3. The cell may replicate damaged DNA: Without proper regulation, the cell may proceed with DNA replication even if the DNA is damaged, leading to the potential transmission of errors in the genetic material to daughter cells.

These outcomes highlight the essential role of the G1 checkpoint in ensuring proper cell cycle control and preventing abnormal cell growth.

Learn more about Cell Cycle Regulation