Events mark beginning and end of third interphase period

Question

Which events mark the beginning and end of third interphase period? What take place in the cell during this period?

Answer 1

Third interphase period is G2. It begins with end of the DNA reproduction and ends with commencement of the primary period of the mitotic phase. Onto G2 the cell is growing too and the replication of centrioles takes place (only in cells which enfold such structures).