Based upon Figure 9.1, histones could be produced in the G1 and S phases of the cell cycle. In the G1 phase, the cell increases the number of organelles and gathers materials that will be used for DNA synthesis. In the S phase, continued growth and then DNA replication occurs.
Work Step by Step
Histones are made in the G1 and S phases of the cell cycle when the cell makes preparations for DNA synthesis.