Mitosis Ana Djurica

Mitosis is cell division in the cell cycle, that ends with producing two identical cells-daughter cells. The 1st stage of cell division is interphase. Interphase is the phase of the cell cycle in which a typical cell spends most of it's life, the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, reads it's DNA, and conducts other "normal" cell functions... It is divided into 3 phases; G1(gap phase 1), S(synthesis) and G2(gap phase 2). 

The ilustration of interphase

• G1-cell grows larger

• S-genome is replicated

• G2-separates the newly replicated genome and marks the end of interphase.

The cell cycle

Mitosis-events that occur in 4 phases of it:

1. Prophase-the spindle microtubules grow and extend from each pole to the equator, chromosomes super coil and become short and bulky and the nuclear envelope breaks down.
2. Metaphase-the chromatids move to the equator and the spindle microtubules from each pole attach to each centromere on opposite sides.
3. Anaphase-the spindle microtubules pull the sister chromatids apart splitting the centromeres. This splits the sister chromatids into chromosomes. Each identical chromosome is pulled to opposite poles.
4. Telophase-the spindle microtubules break down and the chromosomes uncoil and so are no longer individually visible. Also the nuclear membrane reforms. The cell then divides by cytokinesis to form two daughter cells with identical genetic nuclei.

Interphase+4 phases of mitosis

Sources:

•  http://ibguides.com/biology/notes/cell-division
• https://en.wikipedia.org/wiki/Interphase