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AQA AS Biology Cell Cycle
- 1. Interphase
- G1
- New cell grows and carries out
normal functions
- New cell grows and carries out
normal functions
- S Phase
- The cell's DNA is replicated
- each chromosome
becomes double stranded
- The cell's DNA is replicated
- each chromosome
becomes double stranded
- G2
- The second growth phase
- The second growth phase
- G1
- 2. Prophase
- Nuclear envelope and
nucleus disappears
- Chromosomes condense and
become visible under a
microscope
- Nuclear envelope and
nucleus disappears
- 3. Metaphase
- Spindle fibres form
- Chromosomes line
up at the cell equator
- Spindle fibres form
- 4. Anaphase
- Spindle fibres attach to the
centromere of the
chromosomes
- Sister chromatids are
pulled to opposite poles
of the cell
- Spindle fibres attach to the
centromere of the
chromosomes
- 5. Telophase
- Cytokinesis begins
- Nucleolus and nuclear
envelope reforms
- Chromosomes
become invisible
under a microscope
- Cytokinesis begins
Anexos de mídia
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