PCB 3063 Lecture Notes - Lecture 2: Cytokinesis, Mitosis, Nucleoid
17 Dec 2018
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Chapter 2: mitosis and meiosis: mitosis: karyokinesis is the official term for mitosis; it translates to movement of chromosomes. The cell loses its identity: eukaryotes vs. prokaryotes: In prokaryotes dna is in nucleoid region: prokaryotes divide by binary fission while eukaryotes divide by mitosis, or karyokinesis followed by cytokinesis. In order for mitosis to occur: the cell must be large enough: there may be enough organelles and enough molecules in the cytoplasm to support the daughter cells. All genetic material must be copied which is mitosis"s job: prokaryotes dna is tethered to and area and replication begins at the origin of replication. The dna is made in a circle until two new circular strands are made. As this happens the two circular dnas move away from each other and decocatonate , or separate. This can occur very, very fast in prokaryotes, especially e. coli: eukaryotes are a bit slower, probably closer to 24 hours.
