Mitosis — Science definition
Defined in 2 courses:
- The division that separates sister chromatids so each daughter cell receives a complete identical set; it produces no variation. (Life Science & Scientific Inquiry)
- Division of the nucleus that produces two genetically identical nuclei. (Life Science: Biology)
Where it is taught
- The Cell Cycle & Mitosis — Genes, Cell Division & Heredity, Life Science & Scientific Inquiry, Grade 7
- Mitosis & the Cell Cycle — Cell Division, Reproduction & Development, Life Science: Biology, Grade 10
In use
Then comes mitosis, the division of the nucleus, which unfolds in four smooth phases.
Mitosis & the Cell Cycle
Questions using mitosis
Problem 1
Why is mitosis not automatically gamete formation?
Answer and explanation
Mitosis normally preserves the studied chromosome set; meiosis reduces the set in the sexual reproduction model.
Problem 2
What is the modeled chromosome set after normal mitosis?
- Half in every daughter
- The corresponding starting set in each daughter
- No DNA
- Double forever
Answer and explanation
The corresponding starting set in each daughter
Normal mitosis distributes corresponding sets after replication.
Problem 3
In the standard model without new copying errors, what is the main result of mitosis followed by cytokinesis?
- Two genetically identical daughter cells
- Four sex cells with half the DNA
- A cell with double the normal chromosome number
- A finished protein
Answer and explanation
Two genetically identical daughter cells
Mitosis produces two daughter cells genetically identical to the parent, used for growth and repair.
Problem 4
Which is the correct order of the phases of mitosis?
- Anaphase, Metaphase, Prophase, Telophase
- Prophase, Metaphase, Anaphase, Telophase
- Metaphase, Prophase, Anaphase, Telophase
- Telophase, Anaphase, Metaphase, Prophase
Answer and explanation
Prophase, Metaphase, Anaphase, Telophase
The order is Prophase, Metaphase, Anaphase, Telophase — remembered as PMAT.