When cells in G1 and cells in S phase were fused together, the G1 nucleus began

Question

When cells in G1 and cells in S phase were fused together, the G1 nucleus began to replicate DNA when it was exposed to S phase cytoplasm in the fused cell. Which conclusion is best supported by the data? G1 phase nuclei contain diffusible factors that stimulate the initiation of DNA synthesis. G1 phase cytoplasm contains diffusible factors that stimulate the initiation of DNA synthesis. S phase nuclei contain diffusible factors that stimulate the initiation of DNA synthesis. S phase cytoplasm contains diffusible factors that stimulate the initiation of DNA synthesis.

Explanation / Answer

D.S phase cytoplasm contains diffusible factors that stimulate the initiation of DNA synthesis.

Cells in G1 part were amalgamated with cells in late S part to work out if a cell in late S part will induce deoxyribonucleic acid synthesis within the nucleus of a G1 cell and, if so, to work out if the deoxyribonucleic acid synthesis thus evoked AN exceedingly|in a very} G1 part nucleus has an radiography pattern characteristic of early or these days S part synthesis. The results indicate that eighty nine of the G1 nuclei in late-S/G1 binucleates synthesized deoxyribonucleic acid, whereas solely a pair of of the management unfused G1 cells synthesized deoxyribonucleic acid, and that altogether late-S/G1 binucleates the G1 nucleus was evoked to synthesize early S partdeoxyribonucleic acid. These results square measure compatible with the thought that a cytoplasmically transmissible issue initiates deoxyribonucleic acid synthesis however that associate intranuclear mechanism defines the temporal property of replication.

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