Respuesta :
The question is incomplete. The complete question is:
You are carrying out experiments in cell fusion by fusing together cells at different stages of the cell cycle. You then observe the behavior of each nucleus residing in the combined cytoplasm of the two cells. Which of the following results reflects what would occur if you fused a G2 cell to a cell in the M phase?
A: The nucleus from the G2 cell would start to replicate its DNA.
B: The G2 chromosomes would undergo premature chromosome compaction.
C: The G2 chromosomes would decondense.
D: The G2 chromosomes would be elongated and would consist of only one chromatid each.
Answer:
B: The G2 chromosomes would undergo premature chromosome compaction.
Explanation:
The cell cycle consists of interphase and M phase. Interphase has three stages: G1, S and G2. G2 phase is the phase of cell growth and increased metabolism. The genetic material is present in the form of chromatin and individual chromosomes are not visible. Compaction of chromatids starts in prophase of M phase and results in the presence of visible individual chromosomes each having two sister chromatids. If a G2 cell has observable compact chromosomes, this means that a G2 cell was fused with a cell in the M phase.
