What happens when the cell copies its chromosomes

friend we studied in cell cycle that it completes in two steps.

1)      Inter phase  (  G1, Gs, G2 phases)

2)     division phase (  Mitiosis and meosis)

*  G s  phase;

                        during G s phase cell continous start increasing in size also in this phase cell replicates it's chromosomes. and the centrosomes are divided into centrioles for spindling.

well, since there is no answer choices, i will give an answer on how it works : )

the two objects are placed together. energy will always be transferred from the hotter object to the cooler object until they are equal. hope this is close to one of the answer choices : )