Mitosis Phases quizlet

Interphase

• cell replicates (doubles) its DNA

• prepare for mitosis

• centrosome also divides.

Prophase

• DNA condenses into individual distinct chromosomes

• nucleus (nuclear membrane) breaks down;

• centrosomes migrate to the poles

• chromosomes are held together at the centromere

• centrioles begin to form the spindle  

Metaphase

some spindle fibers attach to and organize the chromosomes to line up on the equator of the cell. some spindle fibers span the cell

Anaphase

• spindle fibers (attached to chromosomes) shorten by enzymes, pulling the chromosomes apart.

• other spindle fibers lengthen, pushing the poles apart/ elongating the cell.

Telophase

• two new nuclei form

• a cleavage furrow forms across the midline of the parent cell, pinching it in two

• in cell plants: cell plate

Cytokinesis

• cells completely split

• division of the cytoplasm

• ends up with two separate daughter cells