the first stage of mitosis or meiosis in eukaryotic cell division, during which the nuclear envelope breaks down and strands of chromatin form into chromosomes.
In prophase, chromatin fibers condense tightly into chromosome pairs. The centrosomes move away from each other and spindle microtubules grow from them; in other words, the mitotic spindle begins to...
During prophase the chromatin DNA is condensed into the visible chromosomes, the centrioles begin to migrate to opposite ends of the cell so that the mitotic spindle can be formed. At the end of...