Page 8 - Mitosis - FULL

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Interphase The Cell Cycle

Interphase is the first stage of the cell cycle and the period
before cell division. During this phase the cell matures and
prepares to divide and copies its chromosomes (DNA) Interphase
and centrioles. Note that centrioles are found only in
animal cells. Cell DNA
cytoplasm Growth Replication

centrioles

nucleus Cytokinesis Preparation
Mitosis for Mitosis

spindle M B
bers

Prophase

Each chromosome consists of two identical
copies called chromatids. The chromosomes
in the nucleus thicken and shorten and the
two centrioles move to opposite ends of the
cell. Between the centrioles, spindle fibers
form at each side of the cell. The nuclear
nuclear membrane breaks apart.
chromosome membrane

centromere

Metaphase

The double-stranded chromosomes line up
along the center of the cell and the spindle
fibers attach to each centromere.

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