Mitosis
Mitosis is cell division which produces two identical cells used for growth and repair.
Starts with one human cell containing 46 chromosomes
Ends up with
2 cells each containing 46 chromosomes
When growth or replacement cells are required for the body, mitosis occurs.
Mitosis starts with a cell. This is a normal cell (called a diploid cell) containing 46 chromosomes.
![46 chromosomes contained within a human cell](/images/user/base/Biology/Meiosis/normal-cell.370f8d0.jpg)
The chromosomes copy themselves and remain attached to the original.
![46 paired chromosomes](/images/user/base/Biology/Meiosis/46-paired-chromosomes.7ec8749.jpg)
Below is an enlarged version of what the real paired chromosomes look like under a microscope.
All these chromosomes then line themselves up.
See 46 paired chromosomes lined up
![46 paired chromosomes lined up](/images/user/base/Biology/Meiosis/list-of-all-46.5bb53af.jpg)
They then split down the middle to form a duplicate of each other as the cell divides.
Cell splits into two, each with 46 chromosomes.
![2 cells each containing 46 chromosomes](/images/user/base/Biology/Meiosis/cell-splits-in-two.1b56856.jpg)
![2 cells each containing 46 chromosomes](/images/user/base/Biology/Meiosis/cell-splits-in-two.1b56856.jpg)
Simplified, mitosis in a nucleus with just four chromosomes would be as follows:
Mitosis produces two identical cells.
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-1.4df6ee6.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-2.d516bb3.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-1.b0b0513.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-2.f89189d.jpg)