Answer:
The answer is 25 hours
Step-by-step explanation:
Solution
Given that:
The total number of cells = 1000 cells
The M -phase = 200 cells
In interphase it becomes:
1 X DNA = 400 cells
2X DNA = 200 cells
In between 1X and 2X = 200 cells
The duration of S phase = 5 hours
Now
The first step to take is to calculate the mitotic index of cells which is given as:
Mitotic Index = The number of cells in mitosis/Total number of cells * 100
Thus
Mitotic Index =Number of cells in prophase + metaphase +anaphase + telophase (P+M+A+T)/1000 * 100
=200/1000 * 100
=20%
Now from the cell cycle 20% is 5 hours, then 100% which is the length of total cell cycle. is about 25 hours.