Question

Ryan is looking at a cell under a microscope, he observes formation. he observes spindle microtubules from the centrosomes. which phase of the cell cycle is he observing?

A: Metaphase.

B: anaphase

C: prophase

Answer 1

Out of the choices, the phase of the cell cycle that Ryan is observing is the prophase cycle. The correct answer choice C. 

Answer 2

The right option is C: prophase

Prophase is the phase of the cell cycle Ryan is observing.

Prophase is the first stage of mitosis during which the chromatin condenses to form the visible chromosomes. Also, a structure known as mitotic spindle which is composed of long proteins (microtubules) begin to form from the opposite ends of the cell (centrosomes) and a part of the nucleus where ribosomes are produced disappears during this phase.