Mitotic spindle forms and the nuclear envelope fragments at the prophase stage of mitosis.
<h3>What are the stages of mitosis?</h3>
Mitosis has 4 main stages that are more or less in a continuous spectrum. These stages are:
- Prophase
- Metaphase
- Anaphase
- Telophase
The prophase stage is characterized by the dissolution of the nuclear envelope, the condensation of chromatin materials, and the onset of spindle formation.
The metaphase stage is characterized by the alignment of chromosomes at the equator and the engagement of each chromosome by spindle fibers at the centromere.
The separation of sister chromatids characterizes the anaphase through the shortening of the spindle fibers from the opposite ends of the cell.
The telophase is characterized by the completion of the migration of sister chromatids to the poles.
Thus, the mitotic spindle forms and the nuclear envelope fragments at the prophase stage of mitosis.
More on mitosis can be found here: brainly.com/question/26678449
#SPJ1
