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PROKARYOTES: BINARY FISSION (SPLITTING IN HALF!)
MITOSIS:Cell division process which produces two
daughter cells
NO CHANGE IN GENETIC CONTENT: parent cells and daughter cells
are both diploid
Organisms use mitosis forGROWTH AND REPAIR
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
INTERPHASE: Cells have two copies of each chromosome (here, one pair of little chromosomes, and one pair of big chromosomes).WATCH CAREFULLY!
Nuclear envelope
Chromosome
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
G2, Late interphaseCell checks for complete DNA replication.
Nucleolus
Nuclear envelope
Chromatid
Centrioles
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Prophase Chromosomes condense, become visible. Spindle apparatus forms.
Condensedreplicatedchromosome
Spindlefibers
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Metaphase Chromosomes align along equator of cell.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
AnaphaseSister chromatids separate to opposite poles of cell.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
TelophaseNuclear membranes assemble around two daughter nuclei. Chromosomes decondense. Spindle disappears.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Cytokinesis Division of the cytoplasm into two cells.
THIS IS NOT A STAGE, BUT AN EVENT THAT MARKS THE END OF TELOPHASE
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Interphase of daughter cells.Cells resume normal functions or enter another division cycle.
Steps of Mitosis
I P M A T
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Late interphaseCell checks for complete DNA replication.
Prophase Chromosomes condense, become visible. Spindle apparatus forms.
Metaphase Chromosomes align along equator of cell.
AnaphaseSister chromatids separate to opposite poles of cell.
TelophaseNuclear membranes assemble around two daughter nuclei. Chromosomes decondense. Spindle disappears.
Early interphase of daughter cells.Cells resume normal functions or enter another division cycle.