Mitosis

Cell’s resting phaseCell spends 90% of its

time in InterphaseCell copies/doubles

its chromosomes andprepares for cell

division (mitosis)

INTERPHASE:

Nucleolus and Nuclearmembrane disappear

Centrioles (or poles) appear and move to opposite ends

of cellSpindle fibers begin to stretch across the cell (like

spider webs). Chromosome pairs become

visible (attached to one another by a centromere)

PROPHASE:

Chromosome pairs line up at the equator (center of

the cell)Chromosomes attach tothe spindle fibers at the

centromere.

METAPHASE:

Chromosome pairs separate and move to

opposite ends of the cell

ANAPHASE:

Two new nuclei form Chromosomes

change to chromatin (threads rather than

rods)Mitosis ends

TELOPHASE

Cytoplasm separates and two new cells are formed

Different in plants (cell wall forms down the center) and

animals (cell membrane pinches in)

CYTOKINESIS: