The nucleus.
Nuclear envelope
The nuclear envelope and nucleolus are broken down and absorbed during the prophase of mitosis. This prepares the cell for the division of its genetic material.
Cellular Division.
During prophase, the nuclear membrane breaks down, allowing the condensed chromosomes to be released into the cytoplasm. Additionally, the centrioles move to opposite poles of the cell and the spindle fibers begin to form.
The nucleolus begins to fade from view during prophase.
The nuclear envelope breaks down during the prophase stage of mitosis. This breakdown allows the chromosomes to be released into the cytoplasm for proper alignment and separation during cell division.
During mitosis, chromosomes are in their most condensed form during metaphase
The first stage of mitosis when chromosomes start becoming visible in the microscope is called prophase.
The initial visible phase of mitosis is prophase. During prophase, the nuclear envelope breaks down, chromosomes condense, and the mitotic spindle begins to form.
The nuclear envelope breaks down during prometaphase of mitosis and prophase of meiosis. This breakdown allows the chromosomes to be released from the nucleus and prepare for the subsequent stages of cell division.
The chromosomes coil up and condense during prophase
The nucleolus disappears during the prophase stage of mitosis when the nuclear envelope breaks down, chromosomes condense, and the spindle apparatus begins to form. This is in preparation for the separation of genetic material into two daughter cells.