Mitosis – HSC Biology

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Interphase is not apart of meiosis or mitosis and it occurs to prepare the cell for division. The cell prepares through growing, replicating it’s DNA and preparing to divide.

Prophase is the first step in meiosis, DNA has been replicated so it pairs up at the centromere. Additionally, the chromatin in the cell is condensed and the nucleolus disappears.

Metaphase is when the chromosomes are lined up at the equator of the cell, the genetic information is at its second most condensed stage.

Anaphase involves the pulling apart of the chromosomes into sister chromatids by the spindle fibres which are protrusion from the centriol which are found at both ends of the cell. The daughter chromatids are therefore transported to opposite poles of the cell.

Telophase is the final stage in mitosis and it involves the uncoiling of chromosomes to form chromatin. Hence preparing the genetic material to direct metabolic activities for the new cells. Additionally, the spindle breaks down, and new nuclear envelopes envelop the DNA.

Additionally, cytokinesis occurs which involves the cell membrane being pinched inwards for the cell hence forming to new cells.

Mitosis results in the formation of two genetically identical cells (both diploid). This allows for an organism to grow and heal.