It's the CENTRIOLES and their star-like radiating structures, called asters.
This is Stage 1 in Mitosis:
Chromatin in the nucleus condenses to form chromosomes. The pairs of centrioles move to the opposite sides of the nucleus. Spindle fibers form a bridge between the ends of the cell. The nuclear envelope breaks down.
Cellular Division.
The events of prophase in mitosis, such as condensation of chromosomes and breakdown of the nuclear envelope, are opposite to those that occur during telophase, where chromosomes decondense, and the nuclear envelope reforms.
Chromosomes
Prophase- during prophase, chromatids shorten and thicken, nucleoli disappears, spindle fibers form and centrioles in animal cells move to opposite ends.
The phase during mitosis in which DNA separates into pairs of chromosomes is called prophase. During prophase, the chromosomes condense and become visible as distinct structures before the actual separation occurs during later stages of mitosis.
Cellular Division.
Moving the pairs of centrioles to opposite poles occurs during the prophase stage of mitosis. This process helps to form the mitotic spindle, which is essential for ensuring accurate chromosome segregation during cell division.
The events of prophase in mitosis, such as condensation of chromosomes and breakdown of the nuclear envelope, are opposite to those that occur during telophase, where chromosomes decondense, and the nuclear envelope reforms.
The centrosomes, which contain the centrioles in animal cells, not plant cells.
Chromosomes
Prophase- during prophase, chromatids shorten and thicken, nucleoli disappears, spindle fibers form and centrioles in animal cells move to opposite ends.
During prophase, the nuclear membrane and the nucleolus dissolve and disappear.
CENTRIOLES
The centrioles move to opposite ends of the cell during the prophase stage of mitosis. This movement is essential for the formation of the mitotic spindle, which helps separate the duplicated chromosomes during cell division.
The phase during mitosis in which DNA separates into pairs of chromosomes is called prophase. During prophase, the chromosomes condense and become visible as distinct structures before the actual separation occurs during later stages of mitosis.
During prophase, DNA is condensed and tightly coiled into structures called chromosomes. These chromosomes are made up of DNA and proteins and are visible under a microscope.
Chromosomes condense and become thicker rod-like structures during the prophase stage of cell division, specifically during prophase I of meiosis and prophase of mitosis. This condensation is necessary for the chromosomes to be visible under a microscope and for proper segregation during cell division.