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osp2011

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INTERPHASE

G1S(DNA synthesis)

G2Cyto

kinesis

MitosisMITOTIC(M) PHASE

Figure 12.5

G2 OF INTERPHASE PROPHASE PROMETAPHASECentrosomes(with centriole pairs) Chromatin

(duplicated)Early mitoticspindle

AsterCentromere

Fragmentsof nuclearenvelope

Kinetochore

Nucleolus Nuclearenvelope

Plasmamembrane

Chromosome, consistingof two sister chromatids

Kinetochore microtubule Figure 12.6

Nonkinetochoremicrotubules

Centrosome at one spindle pole

Daughter chromosomes

METAPHASE ANAPHASE TELOPHASE AND CYTOKINESIS

Spindle

Metaphaseplate

Nucleolusforming

Cleavagefurrow

Nuclear envelopeforming

Figure 12.6