CT 2 Qn 21: The Amazing Graph Question

Why I am not buying the other options...

1)
- If division is by meiosis, the DNA content will keep on dropping and it is hard to determine that from the (edge of the) graph.
- If you are making reference to the graph we used in meiosis, n-2n-4n, do note that in those graph, the drop is sharp for a discrete difference and not a gradual one.
- Even if the cells at the tip have n amount of DNA, it should divide by mitosis.

2) no question about it. Wrong.

3)
- We cannot really determine that from the graph. It only can serve as a possibility in the remote sense since we do not know what happen beyond the edge on the right - will there be cell divisions?
- does not account for the horizontal part of DNA per cell