stages of mitosis and binary fission

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9 Terms

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prophase

-chromosomes condense and become visible
-nuclear membrane starts to break down
-centrioles move to opposite poles, spindle fibres begin to form

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metaphase

chromosomes line up at equator of cell

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anaphase

centromeres divide, spindle fibres shorten, pulling chromatids to opposite poles

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telophase

-chromatids unravel into chromatin
-nuclear membrane reforms

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cytokinesis

cytoplasm pinched off to form two individual cells

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describe binary fission in bacterial cells

replication of circular DNA
replication of plasmids
division of the cytoplasm to form two daughter cells

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what happens in S phase

DNA replicates in the nucleus

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G2

cell grows, DNA checked for errors

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G1

organelles replicate, cell grows