metaphase
The nucleoli disappears; the nuclear membrane breaks down; the mitotic spindle appears and the centrioles begin moving towards opposite ends of the cell.
This would indicate that most likely the person or animal is demonstrating a visible asymmetry during walking as a result of pain.
The phase of cell division when duplicated chromosomes first appear is called the prophase. In prophase, the chromatin condenses into visible chromosomes, and the nuclear envelope breaks down, allowing the chromosomes to be more clearly visible.
No, raccoons do not hibernate anywhere. They continue to be active and forage for food during the winter. If the snow becomes too deep for foraging or the temperature becomes too cold, they stay in their den and sleep and emerge again when conditions improve.
Pegasus is a constellation that can be seen best in the Northern Hemisphere during the autumn months, particularly in September and October. During this time, Pegasus is visible in the night sky and is easiest to spot when looking eastward.
A DNA spindle, or spindle apparatus, forms during the prophase stage of mitosis and meiosis. Specifically, in prophase, the chromatin condenses into visible chromosomes, and the spindle fibers begin to extend from the centrosomes to form the spindle apparatus, which is crucial for the separation of sister chromatids during cell division.
During the metaphase stage of mitosis, the chromosomes become attached to the spindle apparatus.
Telophase
During cell division, structures like the chromosomes, spindle fibers, and centrioles are more clearly visible. Chromosomes condense and can be seen as distinct entities, spindle fibers form a dynamic network between the centrioles, and the centrioles organize the spindle apparatus.
Separation of chromatids during anaphase .
The spindle apparatus attaches to the centromere region of the chromosome. This is where the kinetochore proteins are located, which help in the attachment of spindle microtubules to the chromosome during cell division.
spindle apparatus
spindle
The nuclear membrane disappears during prophase of mitosis. This allows the chromosomes to be condensed and move freely within the cell. At the end of mitosis, during telophase, the nuclear membrane reforms around the separated chromosomes.
The centriole with radiating fibers is known as the aster. Asters are involved in the organization of the mitotic spindle during cell division, helping to position and align the chromosomes. They also play a role in anchoring and moving the spindle apparatus.
During prophase of mitosis, the chromosomes condense and become visible, and the mitotic spindle begins to form. The centrosomes, which are the microtubule-organizing centers, move toward opposite poles of the cell. This movement helps to establish the spindle apparatus that will later align and separate the chromosomes during metaphase and anaphase.
The spindle apparatus is responsible for aligning and segregating chromosomes during cell division. The microtubules of the spindle apparatus attach to the centromere of chromosomes and actively move them to opposite poles of the cell during anaphase of mitosis or meiosis. This ensures that each daughter cell receives the correct number of chromosomes.