Science 9 – Mitosis Lab Modeling

Interphase: 

During the beginning of interphase, the cell performs normal functions as usual and keeps on growing. Interphase is also the longest phase during the cell cycle and still absorbes nutrients during the phase.

During the late stage of interphase, the DNA copies itself in the nucleus for the process of replication.

This part of stage involves the DNA molecules to unwind with the help of ab enzymes which separates the DNA molecules. Then, new bases pair with the original one along with the original DNA.

After the DNA is copied, the last step of interphase is for the DNA molecules to join together to form sister chromatins and replicates to make an identical copy of the DNA.

Prophase: 

These spindle fibers form from opposite ends of the cell.

The nucleus disappears for a reason that scientists don’t really know why yet. Then, the spindle fibers attach themselves to the both ends of the sister chromatins.

Metaphase: 

All of the chromatins line up in the middle or in the equator of the cell during metaphase.

Anaphase: 

In the anaphase process, the chromatids are being pulled away from each other and they are being divided into two.

Each one of the halves of the chromatids is on the opposite side of the cell.

Telophase:

During the final stage of mitosis, the spindle fibers disappear and a nuclear membrane start to form around each of the separated set of chromosomes.

Cytokinesis: 

Cytokinesis is the separation of both nuclei that are finally dividing into their own two daughter cells.

The very last step forms both of the nucleus again in each cell.