The phase that occurs directly after s phase is G2 phase.
<u>Explanation:</u>
The Synthesis phase is termed as S phase. This phase in the cell cycle occurs between two phases namely G1 and G2.It is the place where the replication of DNA takes place. This phase will make the DNA to chromosome and this is highly regulated. This phase is an important phase in the cell cycle as the replication of DNA occurs in this phase.
Apart from the replication of chromosomes, the growth of the cell that starts in the G1 phase will be continued with this phase. Thus when the replication of DNA is full done, then S phase will be completed and it proceeds to the G2 phase.
The stimulus the thing that stimulates you is the hot pan because you were du.mb and decided to touch the hot pan. The response is you yanking your hand away from the heat because for some reason you thought touching a hot pan was a good idea.