N5 Biology - Unit 2.1

A cell with two matching sets of chromosomes...

A cell with one set of chromosomes...

Mitosis is a special type of...

How many steps in cell division?

What happens during stage 1 of mitosis?

• Chromatids are pulled apart by spindle fibres

• The nuclear membrane breaks down

• The chromosomes replicate and condense, becoming chromatids

• The cytoplasm splits

What happens during stage 2 of mitosis?

• The nuclear membrane breaks down

• The cytoplasm splits

• Chromosomes replicate and condense, becoming chromatids

• The chromatids line up in the equator

What happens during stage 3 of mitosis?

• Chromosomes replicate and condense, becoming chromatids

• Chromatids line up along the equator and spindle fibres attach to them

• The cytoplasm splits to form 2 identical daughter cells

• The nuclear membrane breaks down

What happens during stage 4 of mitosis?

• The cytoplasm splits and forms 2 identical daughter cells

• Chromatids line up on the equation and spindle fibres attach themselves to them

• The nuclear membrane breaks down

• Chromatids are pulled apart by spindle fibres

What happens during stage 5 of mitosis?

• Chromosomes replicate and condense to become chromatids

• The nuclear membrane breaks down

• The cytoplasm splits to form 2 genetically identical daughter cells

• Chromatids are pulled apart by spindle fibres

Cells which are designed to carry out a specific function are...