Counts in onion root tip (250 cells total): interphase 175, prophase 40, metaphase 15, anaphase 8, telophase 12. Assume the entire cycle takes 24 hours.
Approximately how long does anaphase last?
- A
About 8 hours
- B
About 4 hours
- C
About 24 hours
- Dcheck_circle
About 0.77 hours (46 min)
Explanation
Anaphase fraction = 8/250 = 0.032. Time = 0.032 * 24 hours = 0.77 hours, or about 46 minutes. This phase-fraction method assumes uniform sampling and constant cycle time.