When G2 and M phase cells were fused together, the G2 nucleus became prematurely compacted when it was exposed to S phase cytoplasm in the fused cell. The G2 chromosomes could be seen to be visibly doubled. What conclusion was drawn from this result?
a) M phase cytoplasm contained diffusible factors that initiate DNA synthesis
b) G2 nuclei cannot respond to diffusible factors present in M-phase cell cytoplasm
c) the cytoplasm of the mitotic cell contained diffusible factors that could induct mitosis in a non-mitotic cell
d) the cytoplasm of the G2 cell contained diffusible factors that could halt mitosis in a mitotic cell
Ans: c) the cytoplasm of the mitotic cell contained diffusible factors that could induct mitosis in a non-mitotic cell
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