Stages of Mitosis🧫
Mitosis is part of the cell cycle and has 6 stages:
- INTER.- Before the cell can divide to produce an identical daughter cell, it must produce a copy of its DNA
- PRO. - Chromosomes condense and the nuclear envelope breaks down
- Metaphase - The chromosomes then line up in the equator of the cell and the spindle fibres attach to them
- ANA. - one copy goes to each pole of the cell and is pulled by the spindle fibres
- TELO. - membranes form around each of the sets of chromosomes. These then become the nuclei of the two cells - the nucleus has divided
- CYTO- Before telophase ends, the cytoplasm and cell membrane divide to produce two identical daughter cells.
Mitosis in Growth, Repair and As.Rep.📈
- DEVELOPMENT + GROWTH- the formation of a multicellular organism from a single fertilized egg and an increase in size through the division of cells by mitosis.
- CELL REPAIR - many cells within a multicellular organism are constantly dying and being replaced by mitosis.
- ASEXUAL REP. – some organisms (e.g. Plants and bacteria) can reproduce asexually so that only one parent is needed.
Mitosis Description- Remember this for I/GCSE Biology as it is commonly asked
Mitosis is the production of two daughter cells each with identical sets of chromosomes in the nucleus to the parent cell, this results in the formation of two genetically identical diploid body cells.
Drafted by Catrina (Biology)