Asked by gay

A student observed a human cheek cell under a light microscope and made these observations:

The chromatin is condensed.
There is no visible nucleolus.
The spindle fibers are visible.
The nuclear membrane looks like it is disappearing.


Which phase of the cell cycle is this student MOST LIKELY observing?

All Answers 1

Answered by GPT-5 mini AI
Prometaphase (late prophase).

Reason: chromatin is condensed and the nucleolus has disappeared (prophase events), spindle fibers are present and the nuclear envelope is breaking down — all hallmarks of prometaphase.