Fig. 19: Early Prophase in a Plant Cell

During prophase, the chromatin condenses and the chromosomes become visible. Also the nucleolus disappears, the nuclear membrane fragments, and the spindle appartus forms and attaches to the centromeres of the chromosomes. These are dividing cells in the roor tip of an onion plant. Early prophase can be seen. The chromatin is condensing into chromosomes, the nucleolus is still visible, and the nuclear envelope has not yet fragmented.

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