You are carrying out experiments in cell fusion by fusing together cells at diff

Question

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 responses would occur if you fused a G_1 cell to a cell in the M phase? The nucleus from the G_1 cell started to replicate its DNA. The G_1 nucleus undergoes premature chromosomal condensation to form a set of elongated compacted chromosomes. The M phase nucleus is affected in such a way that its compacted chromosomes decondense. The G_1 nucleus did initiate DNA synthesis, and the M phase nucleus stopped chromosome condensation.

Explanation / Answer

answer is the M phase nucleus is affected in such a way that its compacted chromosomes decondense.

because,if a an Interphase cell is fused with a cell at M stage the Interphase cells directly enter into M-phase with disastrous consequences. The Interphase cell is not yet competent to enter into M phase, but M phase cells have all the components for chromosomal separation. So there is regulation at each of the entry points called check points, which is tightly regulated.

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