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Prophase is the first stage of mitosis in animal cells, and the second stage of mitosis in plant cells. [10] At the start of prophase there are two identical copies of each chromosome in the cell due to replication in interphase. These copies are referred to as sister chromatids and are attached by DNA element called the centromere. [11]
The presence of these core cell cycle factors can be explained through their role in neuronal migration, maturation, and synaptic plasticity (Christopher L. Frank1 and Li-Huei Tsai1, 2009). However, it is also possible that, under certain conditions, these factors can induce cell cycle re-entry.
English: A diagram of mitosis stages Interphase (G₂): In this substage, the cell prepares for nuclear division and a protein that makes microtubles for cell division is synthesized. Prophase: The longest stage of mitosis. In this stage the chromosomes become visible and the centrioles separate and move to opposite poles of the cell.
Cell division in prokaryotes (binary fission) and eukaryotes (mitosis and meiosis). The thick lines are chromosomes, and the thin blue lines are fibers pulling on the chromosomes and pushing the ends of the cell apart. The cell cycle in eukaryotes: I = Interphase, M = Mitosis, G 0 = Gap 0, G 1 = Gap 1, G 2 = Gap 2, S = Synthesis, G 3 = Gap 3.
In order for asymmetric division to take place the mother cell must be polarized, and the mitotic spindle must be aligned with the axis of polarity. The cell biology of these events has been most studied in three animal models: the mouse, the nematode Caenorhabditis elegans, and the fruit fly Drosophila melanogaster.
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Date/Time Thumbnail Dimensions User Comment; current: 10:00, 10 September 2008: 774 × 115 (459 KB): LadyofHats {{Information |Description= a serie of cells showing the mitosis divition of eucaryotic cells |Source=own work, the cells are extracted from: <gallery> Image:Prophase procariotic mitosis.svg Image:Prometaphase procariotic mitosis.svg Image:Metaphase proca
Nikki Glaser delivered a number of mic drop moments at the 2025 Golden Globes — from the red carpet to the stage!. Ahead of her hosting duties, the stand-up comedian made her mark in a gold silk ...