Modeling Mitosis

Cell Membrane (White yarn on outside), Nucleus (White yarn inside), Chromatin (Pipe Cleaners), Spindle fibres (pink yarn), DNA (beads on ends of pipe cleaners).

Interphase:

 interphase (begining)

At the beginning of Interphase DNA is being copied.

Interphase (End)

Near the end the chromosomes are doubled. Spindle fibres are not visible at any part of interphase.

Prophase:

Prophase

Replicated DNA molecules join together to form sister chromatids.

Metaphase:

Metaphase

Chromosomes line up in middle of cell.

Anaphase:

Anaphase

Sister chromatids separate into two halves. They move to opposite sides of the cell.

Telophase:

 

Telophase

Spindle fibres disappear two new nuclear membranes form.

Cytokinesis:

Cytokinesis

Cell divides into two.

Athena Malta

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