In most animal cells, mitosis is triggered by the activation of the cyclin B1-associated cyclin-dependent kinase 1 (CDK1), which phosphorylates a range of substrates, thus promoting cell ...

The five phases of mitosis ... cells. The breakdown of the nuclear membrane is an essential step for spindle assembly. Because the centrosomes are located outside the nucleus in animal cells ...

when the parent cell combines with another parent cell, the proper amount of DNA is maintained. This solution is called meiosis. Mitosis describes the process by which the nucleus of a cell ...