During which phase does chromatin condense into visible chromosomes?

During prophase, chromatin condenses to form distinct, visible chromosomes. This process is crucial because it allows the genetic material to be efficiently separated during cell division. As the chromatin fibers coil and shorten, they become more compact, making it easier for the cell to manage and segregate the chromosomes during the subsequent phases of mitosis. The visibility of the chromosomes during prophase is essential for ensuring that each daughter cell receives the correct number of chromosomes, which is critical for maintaining genetic stability.

In other phases, although chromosomal structures are involved, this specific condensation event occurs uniquely during prophase. This phenomenon is a key characteristic of the mitotic phase, helping to delineate the stages of cell division and ensure that the genetic material is organized and prepared for distribution to the daughter cells.