Eukaryotic Cell ReproductionInterphase, Mitosis, and Cytokinesis

InterphaseCell is carrying out all life functions

plus storing energy for mitosis

Each chromosome is duplicated which forms chromatids

Chromatids: identical copies of a chromosome, held together at centromere

Prophase1st phase of Mitosis

Nuclear membrane dissolves

Chromosomes condense and start to move towards center of cell

Centrioles move to opposite sides of cell

Mitotic spindle fibers form between the centrioles

Metaphase2nd Stage of Mitosis

Mitotic spindle fibers attach to the centromeres of each pair of chromosomes

The chromosomes are lined up along the equator of the cell

Anaphase3rd Stage of Mitosis

Chromatids separate at the centromere

Each chromatid is pulled to a pole of the cell by the mitotic spindle fibers

TelophaseLast Stage of Mitosis

Nuclear membranes form around the two sets of chromosomes

Chromosomes unwind

Mitotic fibers disappear

Mitosis is now complete

CytokinesisEukaryotic cells without a cell

wall, cell membrane pinches inward and eventually all the way through to form the two daughter cells

In eukaryotic cells with a cell wall, a cell plate forms in the middle of the cell to divide the two cells.

What Did You Learn?How are binary fission and

mitosis similar? How are they different?

Why is it important for chromosomes to be copied before cell division?

What would happen if cytokinesis occurred without mitosis?