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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