MEIOSIS AND MITOSIS

Mitosis

Mitosis is the form of cell division that occurs during the cell cycle

In mitosis the parent cell divides to produce two genetically identical daughter cells

Mitosis is a continuous process Mitosis is needed for the growth of

multicellular organisms And for repairing damaged tissues

Mitosis

There are 5 stages in Mitosis

Interphase -Indie Prophase -Purple Metaphase -Mice Anaphase -Are Telophase Trendy

Interphase

In this stage the cell is preparing to divide.

The cell’s DNA is unravelled and replicated.

The organelles are also replicated so it has spare ones.

Prophase

The chromosomes condense getting shorter and fatter

Tiny bundles of protein called centrioles start moving to opposite poles of the cell, forming a network of protein fibres across it called the spindle

The nuclear envelope breaks down and chromosomes are free in the cytoplasm

Metaphase

The chromosomes line up along the equator of the cell and become attached to the spindle by their centromere.

Anaphase

The centromeres divide separating each pair of sister chromatids.

The spindles contract, pulling the chromatids to opposite poles of the cell, centomere first

Telophase

The chromatids reach opposite poles on the spindle, they uncoil and become long and thin again

They are now called chromosomes again

A nuclear envelope forms around each group of chromosomes, so there are now two nuclei

The cytoplasm divides and there are now two daughter cells that are genetically identical to the parent cell