Mitosis

MITOSIS

Submitted To;

Muhammad YaseenSubmitted

By;Mohammad Saif

Mitosis:

The type of cell division in which the daughter cells receive the same number of chromosomes.

• The daughter cells are identical in all aspects except size.• It occurs in somatic cells of eukaryotes. Mitosis is divided into two types:1. Karyokinesis2. Cytokinesis

Karyokinesis:

Karyon means “Nucleus”Kinesis means “Division”

The division of nucleus is called karyokinesis.

Prophase:

• First stage of mitosis.• Chromatin material

condenses.• Chromatin form

chromosomes.• Nuclear membrane

disappears.• Centrioles moves

towards opposite poles.

• Spindle fibers are formed.

Metaphase:

• The centrioles reaches to opposite poles.

• Chromosomes occupy the cenral region.

• Centromeres attach to spindle fibers.

Anaphase:

• The chromosomes are divided at centromere.

• Divided chromatids start moving towards opposite poles.

Telophase:

• Reverse of prophase.• Chromosomes reaches

towards opposite poles.• Spindle fibers start

disappearing.• Nuclear membrance &

nucleolus reappers.• Chromosomes change into

chromatin.• As a result two daughter

nuclie are formed.

Cytokinesis:

Cyto means “cytoplasm”Kinesis means “division”

The dvision of cytoplasm is called cytokinesis.

Explanation(Cytokinesis):

• The plasma membrane move inward in the center of the cell.

• The plasma membrane move deeper and deeper.

• Finally the cell divides into two daughter cells.

The End