What is Mitosis????What is Mitosis????

• The process by which a Eukaryotic Cell divides/separates the chromosomes in the nucleus into two separate cells.

• These cells are identical daughter cells!!

The Phases……Interphase• I is for Identifiable!

– In this stages chromosomes appear to be a big jumble! They are UnIdentifiable

• Chromatin appears in the middle of the nuclear envelope

• Chromosomes are copied• This stage is technically

NOT mitosis…we are just getting ready!

The Phases...........ProphaseThe Phases...........Prophase

• P is for Pairs• Chromatin condenses

to be viewed as rod like pairs (chromosomes)

• Chromosome pairs are easily seen during this phase.

• The centromeres are moving to opposite sides of the cell.

The Phases……..MetaphaseThe Phases……..Metaphase

• M is for Middle• Chromosomes line

up in the middle of the cell

• Mitotic Spindles from the centromere creepcreep out and attach to the chromosomes.

• Nuclear envelope dissolves

The Phases………AnaphaseThe Phases………Anaphase

• A is for Apart• Mitotic Spindle

Fibers pull the chomosomes apart!!– Toward opposite

sides of the cell

• Each Chromosome is now two separate chromatids!!

The Phases…………TelophaseThe Phases…………Telophase

• T is for Two Cells• A new nuclear

membrane forms• The cell begins pulling

apart to create two separate cells!!!– Done through cleavage

furrow

• Cytokinesis follows– Cell pinches in two to

become two separate cells.

Can you find examples of each phase?