Final answer:
The amount of DNA during G1 of interphase is C, the same as immediately following mitotic cytokinesis.
Step-by-step explanation:
The amount of DNA during G1 of interphase is C, which is the same as the amount of DNA immediately following mitotic cytokinesis. During interphase, the cell undergoes three distinct periods: G1, S, and G2. In the G1 phase, the cell doubles in size and accumulates the building blocks of chromosomal DNA and associated proteins. The S phase is when DNA replication occurs, resulting in an identical copy of all the cell's DNA. And in the G2 phase, the cell replenishes its energy stores and synthesizes proteins necessary for chromosome manipulation.