In which phase of mitosis does the nuclear en | vedclass

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(B) During the process of mitosis, the $Prophase$ stage is characterized by the condensation of chromatin into chromosomes. As the cell progresses int

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Prometaphase

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(B) During the process of mitosis, the $Prophase$ stage is characterized by the condensation of chromatin into chromosomes. As the cell progresses into $Prometaphase$ (often considered the transition between $Prophase$ and $Metaphase$), the nuclear envelope completely disintegrates or disappears. Simultaneously, the spindle fibers (microtubules) attach to the kinetochores of the chromosomes, making them visible under a microscope. Therefore, the disappearance of the nuclear envelope and the formation of spindle fibers are hallmark events of $Prometaphase$.

In which phase of mitosis does the nuclear envelope disappear and spindle fibers become visible?

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