Starts at ori. two replication forks. takes about 40 mins. Multifork replication (prokaryotes) so at least one round of DNA replication is complete before cytokinesis.
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Describe binary fission.
How prokaryotes divide. DNA becomes attached to membrane, cell enlarges, spetum forms, cell divides.
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Describe cytokinesis
TAkes about 20 mins, FtsZ distributed evenly but forms ring of protein around septum. contracts until two cells.
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What happens in the cycle cycle of eukaryotes.?
g1 -grothw phase, S phase- DNA replication -conhesin with kleisin forms around sister chromatids. ensure they don't drifts apart. G2 M .
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Mitosis.
1.Chromosome condense. DNA loops caused by condensin. with a CAP at one side. 2.Mitotic spindles form. Kleisin subunit is cleaved by a protease.
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What happens in plants?
cell wall forms instead of contractile ring which partitions cytoplasm. Guided by phramoplast, which contains microtubules where vesicles are transported.
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Other cards in this set
Card 2
Front
Describe binary fission.
Back
How prokaryotes divide. DNA becomes attached to membrane, cell enlarges, spetum forms, cell divides.
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