A cell contains DNA damage that causes it to undergo apoptosis before reaching mitosis. This cell had twice the amount of DNA for a cell of this type. During which checkpoint did this cell trigger apoptosis?(1 point) Responses G1 Checkpoint cap g sub 1 Checkpoint G2 Checkpoint cap g sub 2 Checkpoint M Checkpoint cap m Checkpoint No checkpoint meets these criteria.
The cell would trigger apoptosis at the G2 checkpoint.
Based on the given information, the cell with twice the amount of DNA triggering apoptosis before reaching mitosis would have triggered apoptosis at the G2 checkpoint (G2 Checkpoint).
To determine during which checkpoint the cell triggered apoptosis, we need to understand the normal cell cycle and the purpose of each checkpoint.
The cell cycle consists of four main phases: G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M (Mitosis). The checkpoints are control mechanisms that act as stages of quality control, ensuring that the cell is ready to proceed to the next phase of the cell cycle. These checkpoints allow for DNA repair, accurate replication, and proper regulation of cell division.
Now, in the given scenario, the cell has twice the amount of DNA than a normal cell of this type. This implies that DNA damage has occurred, most likely during the replication phase (S phase), resulting in an abnormal amount of DNA in the cell. As a result, apoptosis is triggered to eliminate the damaged cell.
Given this information, we can conclude that the cell triggered apoptosis during the G2 checkpoint (cap G2 sub checkpoint). The G2 checkpoint is responsible for checking DNA integrity and completion of DNA replication before entering the mitotic phase (M phase). Since the cell has double the amount of DNA, it suggests that the DNA replication could not be completed properly, leading to the activation of apoptosis during the G2 checkpoint.