1.6 Revision notes
CELL DIVISION
Mitosis
Division of the nucleus into two genetically identical daughter cells
Stages in Mitosis: Pass Me A Taco
Prophase Metaphase Anaphase Telophase
Prophase
- Chromosomes become condensed (fatter and shorter) via supercoiling
- Nucleolus breaks down
- Centrosomes move to opposite poles
- Microtubules form from centrosomes
o Microtubules = spindle fibres
- Nuclear membrane/envelope breaks down and nucleus dissolves
Metaphase
- Microtubules continue to grow and attach to centromeres
o Centromere: centre point of a chromosome
- Microtubules depolymerisation causes contract in length
- Chromosomes align at centre of cell (equatorial plane)
Anaphase
CELL DIVISION
Mitosis
Division of the nucleus into two genetically identical daughter cells
Stages in Mitosis: Pass Me A Taco
Prophase Metaphase Anaphase Telophase
Prophase
- Chromosomes become condensed (fatter and shorter) via supercoiling
- Nucleolus breaks down
- Centrosomes move to opposite poles
- Microtubules form from centrosomes
o Microtubules = spindle fibres
- Nuclear membrane/envelope breaks down and nucleus dissolves
Metaphase
- Microtubules continue to grow and attach to centromeres
o Centromere: centre point of a chromosome
- Microtubules depolymerisation causes contract in length
- Chromosomes align at centre of cell (equatorial plane)
Anaphase
