The mitotic cycle consists of a series of steps during which the chromosomes and other cell material double to make two copies. The cell then divides into two daughter cells, each receiving one copy of the doubled material. The mitotic cycle is complete when each daughter cell is surrounded by its own outer membrane.
Why is mitosis a cycle?
Mitosis is a type of cell division in which one cell (the mother) divides to produce two new cells (the daughters) that are genetically identical to itself. In the context of the cell cycle, mitosis is the part of the division process in which the DNA of the cell’s nucleus is split into two equal sets of chromosomes.
Is mitosis a continuous cycle?
However, cytokinesis also is listed as its own phase (the C phase). To understand mitosis, it is divided into five discrete stages (prophase, anaphase, etc.); however, it is actually a continuous process, rather than one of discrete steps. Mitosis occurs exclusively in eukaryotic cells.
What is the correct order of the stages of mitosis?
Today, mitosis is understood to involve five phases, based on the physical state of the chromosomes and spindle. These phases are prophase, prometaphase, metaphase, anaphase, and telophase.
What triggers mitosis?
Entry into mitosis is triggered by the activation of cyclin-dependent kinase 1 (Cdk1). This simple reaction rapidly and irreversibly sets the cell up for division.
What happens in each phase of mitosis?
1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3) Anaphase: sister chromatids are pulled to opposite poles of the cell 4) Telophase: nuclear envelope …
Is meiotic and meiosis same?
In meiosis, DNA replication is followed by two rounds of cell division to produce four daughter cells, each with half the number of chromosomes as the original parent cell. The two meiotic divisions are known as meiosis I and meiosis II.
Comparison to mitosis.
|Genetically same as parent?||No||Yes|