BIOLOGY

INTRODUCTION

• Everyday our body produces thousands of skin cells. When the cell divides there are 5 steps to the process . When the DNA replicates then each daughter cell receives the exacted copy.

G1 (Gap 1 Phase)
They way a cell starts separating. All the organelles replicate including centrioles.

Synthesis (S)
The second step to the process involves the DNA replication.

G2 (Gape 2 Phase)
This process involving all the Emzymes needed to aid the cell division are produced.

MITOSIS

• The second process is mitosis, in mitosis is there are 4 phase,first phase is prophase,the second phases is metaphase,the third step is Anaphaseand the fourth step is telophase.

Mitosis- prophase

• During prophase the chromosomes condense and come visible appearing. As two sister chromosomes held together.The Cytosekeleton disassembles as the spindles begin to form,in animal cells centriols play the important roll in the distribution of the chromosomes in the dividing cell. The centriols migrate to opposite poles in the cell , establishing a bridge of microtubules called the spindle abrades and the Nuclear envelope breaks down. To the end of prophase the chromosomes attach by protein in,

MITOSIS- PROPHASE

• the middle of the sister chromosomes called Kinedecores nedacores. The microtubules on each pole start moving and the chromosomes to the cell equator.

MITOSIS-METAPHASE

• During metaphase all the chromosomes are alined at the equator of the cell which is called metaphase plate.

MITOSIS- ANAPHASE

• In anaphase it begins with the degradation of protein that holds sister chromosomes and freeing individual chromosomes,this free chromosomes chromosomes are then pulled by nedacores to opposite poles.

MITOSIS-TELOPHASE

• At telophase a cleavage furrow forms in the center of the cell this indentation is then printing bealt of philaments surrounding the inside of a cells circumference.chromosome cluster at opposite poles and then decondencing and the nuclear envelope is then reformers around . The spindle apardice disassembles as the microtubules broken down into tubules monam that can use to firm Cytosekeleton of the daughter cell.

CYTOKNESIS

• The last process is called Cytoknesis. In animal cells Cytoknesis pleats division by expanding the furor to completely separate the newly formed daughter cells,since plant cell walls can not be constructed by fiber,vessels form an expanding membrain called cell plate like animals cells the Cytoplasm for 2 identical daughter cells.

Conclusion
The process of cell division has 5 steps to it first step is (G1) Gap 1 phase,synthesis, (G2) Gap 2 phase, Mitosis and Cytoknesis. All these steps help in cell division.

THE END