What happens to chromosomes during prometaphase?

Mitosis is the process by which cells other than egg and sperm cells divide. The stages of mitosis are as follows:

Interphase (occurs prior to mitosis): The cell is metabolically active and preparing for mitosis.

• The chromosomes are not distinct.


• The nucleolus may be visible.

Prophase

• The chromatin begins to condense into visible chromosomes.


• The nucleolus disappears.


• The centrioles begin to move to opposite sides of the cell.


• The mitotic spindle begins to form.

Prometaphase

• The nuclear membrane dissolves at the beginning of prometaphase.


• The kinetochores are formed.


• The microtubules attach to the kinetochore.


• 
  The chromosomes begin moving. 

Metaphase

• The chromosomes are completely condensed and aligned along the metaphase plate. 

Anaphase

• The chromatids separate and move along the spindle fiber to opposite poles of the cell.

Telophase

• The nuclear membrane reforms.


• The chromosomes become indistinct.


• The spindle fibers break down.

Cytokinesis

• The cell divides into two daughter cells.