Hi I am Alaa and I will tell you a story about my friend. 

Do you know that my friend name is a  CELL.  

Yes, her name is a CELL.   

My friend CELL is the start of all organisms, and all organisms start their life from a single cell.

This is how my friend CELL looks like. 

It is pretty, right!? 

My friend CELL has to go through different phases called the CELL cycle.

CELL CYCLE??

Yes, CELL cycle.

The is a picture of a CELL cycle.

As we see in this picture, every thing start at G1 

The Growth phase allows new proteins and organelles to developed full grown ECLL in the living. during this phase allows chromosomes to condense and coil during the cycle.

Then the flowing step is going into Synthesis(s).  This is konw as one longest stage for the cells. during this stage is also know as the DNA Replication stage.

During G2 phase protein are synthesized in preparation for mitosis while my friend Cell growth continues.

Also, in G2 phase m y freind CELL grows even more and gets ready to enter Mitosis.

Do you know what is Mitosis?

Mitosis is the division of my friend CELL's nucleus, and cytokinesis, which is the division of the cell cytoplasm. 

Mitosis is also divided into four phases

The first phase is prophase, in that phase my friend cell's nuclear membeance and nucleolus start to break down. also the chromatin relax into chromosomes.

The second phase of Mitosis is Metaphase,in Metaphase the chromosomes line up in the middle of my friend CELL.

The third phase of Mitosis is Anaphase, and it is when the chromosomes spilt and the sister chromatids move to the opposite side of my friend Cell's poles.

The last stage of Mitosis is Telophase, in This phase the chromosmes relax back out and everything that happened in prophase os reversed.

Now it is time to tell you about Meiosis. 

Yes, Meiosis.

So Meiosis is a type of my friend CELL division which produce four dughter cells and reduces the chromosome number by half.