Question
When does a cell have two nuclei?
A.
after the G2 phase
B.
after the S phase
C.
after mitosis
D.
after cytokinesis
A.
after the G2 phase
B.
after the S phase
C.
after mitosis
D.
after cytokinesis
Answers
GPT-4o mini
A cell has two nuclei after the G2 phase.
In the cell cycle, during the S phase, DNA is replicated, resulting in two sets of chromosomes. By the end of the G2 phase, the cell prepares for mitosis with two complete sets of chromosomes within a single nucleus. However, it is after mitosis that the nuclear envelope typically breaks down and eventually, during cytokinesis, the cell divides.
Therefore, the most appropriate answer in terms of where a cell would first have two nuclei (before cytokinesis) would be after mitosis.
Thus, the correct answer is **C. after mitosis**.
In the cell cycle, during the S phase, DNA is replicated, resulting in two sets of chromosomes. By the end of the G2 phase, the cell prepares for mitosis with two complete sets of chromosomes within a single nucleus. However, it is after mitosis that the nuclear envelope typically breaks down and eventually, during cytokinesis, the cell divides.
Therefore, the most appropriate answer in terms of where a cell would first have two nuclei (before cytokinesis) would be after mitosis.
Thus, the correct answer is **C. after mitosis**.