You have isolated DNA from three different cell types of an organism, determined the relative DNA content for each type, and plotted the results on the graph shown in Figure 13.3. Refer to the graph to answer the following questions.

Figure 13.3
-Which sample might represent an animal cell in the G₂ phase of the cell cycle?

Question

You have isolated DNA from three different cell types of an organism, determined the relative DNA content for each type, and plotted the results on the graph shown in Figure 13.3. Refer to the graph to answer the following questions.
  
Figure 13.3
-Which sample might represent an animal cell in the G₂ phase of the cell cycle?

Quizplus · Accepted Answer

Sample II has the highest relative DNA content, indicating that the cell is in the G₂ phase of the cell cycle when DNA is duplicated. Sample I has a lower DNA content than sample II, which suggests that it may be in an earlier phase of the cell cycle. Sample III has the lowest relative DNA content, which indicates that this cell type may be in the G₁ phase, before DNA replication occurs.

You Have Isolated DNA from Three Different Cell Types of an Organism