The figure below represents the relative amount of nuclear DNA during different segments of consecutive cell cycles. amount of DNA in nucleus cycle I Amount of nuclear DNA in an actively dividing cell. A с According to the figure above, which of the numbered regions represents the G1 phase of the cell cycle? D I or V IV II or IV V cycle II

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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The figure below represents the relative amount of nuclear DNA during different segments of consecutive cell cycles.

[Diagram]

- **Y-axis**: Amount of DNA in nucleus
- **X-axis**: Two cycles (Cycle I and Cycle II)

The diagram is a line graph divided into five regions labeled I to V across the two cycles:

- **Region I**: A constant low level of DNA.
- **Region II**: An increase in DNA, doubling in quantity.
- **Region III**: The DNA remains at the increased level.
- **Region IV**: A decrease back to the initial low level.
- **Region V**: Another region of low amount of DNA.

**Amount of nuclear DNA in an actively dividing cell.**

**According to the figure above, which of the numbered regions represents the G1 phase of the cell cycle?**

- A. V
- B. III
- C. I or V
- D. II or IV

[Answer options with checkboxes]
Transcribed Image Text:The figure below represents the relative amount of nuclear DNA during different segments of consecutive cell cycles. [Diagram] - **Y-axis**: Amount of DNA in nucleus - **X-axis**: Two cycles (Cycle I and Cycle II) The diagram is a line graph divided into five regions labeled I to V across the two cycles: - **Region I**: A constant low level of DNA. - **Region II**: An increase in DNA, doubling in quantity. - **Region III**: The DNA remains at the increased level. - **Region IV**: A decrease back to the initial low level. - **Region V**: Another region of low amount of DNA. **Amount of nuclear DNA in an actively dividing cell.** **According to the figure above, which of the numbered regions represents the G1 phase of the cell cycle?** - A. V - B. III - C. I or V - D. II or IV [Answer options with checkboxes]
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