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Chapter 9

Chapter 9 Cell Cycles.docx

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York University
BIOL 1000
Nicole Nivillac

Chapter 9 Cell Cycles - Cytokinesis is the division of the cytoplasm - Chromosome segregation – the equal distribution of daughter chromosomes to each of the two cells that result from cell division - The longest phase in mitosis is the interphase where cell grows and duplicates. - In interphase there is G ph1se, S phase then G phase 2 - During prophase chromosomes condense into rod like structures and the nucleolus disappears, meaning that RNA synthesis disappears. - During prometaphase the nuclear envelope breaks down and spindles form, and chromosomes attach to spindles. - During metaphase the chromosomes are ligned up at the spindle midpoint. - During anaphase sister chromatids separate and move to opposite spindle poles. - During telophase the spindle disassembles and chromosomes decondense and nucleolus and envelope reappear. - Animal cells use furrowing and plants use cell plate formation in cytokinesis. - Animal cells use centrosomes to create spindle
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