Final answer:
After 35 hours, it is likely that both cells would have completed a cell cycle and started a new one, hence option a is the most probable, but specific cell factors could alter this generalization.
Step-by-step explanation:
The question pertains to the stages of cell growth and division observed in eukaryotic cells. Based on the information provided, a eukaryotic cell cycle includes interphase (consisting of G1, S, and G2 phases) and the mitotic phase. Interphase involves cell growth and DNA replication, while the mitotic phase includes the separation of chromosomes and cell division.
Considering a cell cycle of about 24 hours for rapidly dividing cells, after 35 hours, it is probable that both cells would have completed one cycle and started a new one. Therefore, without specific details about the cell types, option d seems less likely as it suggests varied division rates, and option b is incorrect as S phase typically lasts 8-10 hours. Option c, involving the M phase, is also unlikely as this phase is relatively short. Therefore, option a is most likely if both cells are dividing normally; however, cell-specific factors could lead to different outcomes.