Mitosis
Biology: AQA GCSE Higher, topic 1.2.3
Mitosis
Mitosis (type of cell division) is part of the cell cycle. During mitosis:
Chromosomes are pulled apart
- The two sets of chromosomes copied during the initial growth stage are pulled to opposite ends of the cell.
Nucleus divides
- The nucleus divides into two.
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Identical daughter chromosomes
- Mitosis ensures that both daughter cells have the same chromosomes as each other and the parent cell.
- This is important for processes that require identical cells to be produced.
- For example, the growth and repair of tissues and asexual reproduction.
Test yourself on Mitosis
Why do the two daughter cells produced by mitosis contain the same chromosomes as the parent cell?
Which of the following are true of mitosis?
What happens to the nucleus during mitosis, after the two sets of chromosomes have been pulled to opposite ends of the cell?
How does the number of genes in a banana compare with the number in a human?
During mitosis, the chromosomes are pulled to opposite ends of the cell and the nucleus then divides into two. What is the result of these two events?