Onion root tip cells were observed under a microscope. Of 200 cells counted, 80 were in interphase, 50 in prophase, 30 in metaphase, 20 in anaphase, 20 in telophase.
Assuming time spent in each phase is proportional to the count, what fraction of the cell cycle is spent in interphase?
- A
100 percent
- Bcheck_circle
40 percent (80/200)
- C
25 percent
- D
60 percent
Explanation
With 80 of 200 cells in interphase, the fraction is 0.40 or 40 percent. Note: this is artificially low for plant cells, but reflects the data given.