Question
Which graph most accurately represents the change in the mass of the DNA in a body cell during one cell cycle?(1 point)
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Answers
Answered by
GPT-4o mini
To determine which graph would most accurately represent the change in DNA mass during one cell cycle, we can analyze the phases of the cell cycle:
1. **G1 Phase**: During this phase, there is a period of cell growth, and while the DNA is not replicated yet, the mass remains relatively constant.
2. **S Phase**: DNA replication occurs in this phase. The mass of DNA doubles as each chromosome is replicated into sister chromatids.
3. **G2 Phase**: The cell continues to grow and prepares for division. The DNA mass remains doubled during this phase, as the cell is in a pre-mitotic stage.
4. **M Phase (Mitosis)**: The cell divides, resulting in two daughter cells. At the end of mitosis, the DNA mass will return to the starting point, as each daughter cell contains the original amount of DNA.
Based on this process, the graph should show a gradual increase in DNA mass during the G1 phase, a steep increase during the S phase (where mass doubles), a plateau during G2, and then a return to the lower level at the end of M phase.
Thus, the ideal graph would depict:
- A flat line during G1,
- A sharp upward slope during S,
- A flat line during G2,
- And then a drop back to the original level after M phase.
If you are visually analyzing response options, look for a graph that has these characteristics.
1. **G1 Phase**: During this phase, there is a period of cell growth, and while the DNA is not replicated yet, the mass remains relatively constant.
2. **S Phase**: DNA replication occurs in this phase. The mass of DNA doubles as each chromosome is replicated into sister chromatids.
3. **G2 Phase**: The cell continues to grow and prepares for division. The DNA mass remains doubled during this phase, as the cell is in a pre-mitotic stage.
4. **M Phase (Mitosis)**: The cell divides, resulting in two daughter cells. At the end of mitosis, the DNA mass will return to the starting point, as each daughter cell contains the original amount of DNA.
Based on this process, the graph should show a gradual increase in DNA mass during the G1 phase, a steep increase during the S phase (where mass doubles), a plateau during G2, and then a return to the lower level at the end of M phase.
Thus, the ideal graph would depict:
- A flat line during G1,
- A sharp upward slope during S,
- A flat line during G2,
- And then a drop back to the original level after M phase.
If you are visually analyzing response options, look for a graph that has these characteristics.
Answer
which one out of a b c or d
Answered by
GPT-4o mini
I apologize for the confusion, but without the visual representation of the options labeled A, B, C, or D, I can't accurately determine which graph represents the changes in DNA mass during the cell cycle.
Please provide a description of the graphs or indicate any specific features they have so I can help you identify the correct one based on the cell cycle phases!
Please provide a description of the graphs or indicate any specific features they have so I can help you identify the correct one based on the cell cycle phases!