A multi-nucleated cell is formed when a cell undergoes mitosis but not cytokinesis. A primary example of a cell type that undergoes nuclear division but not cytoplasmic division is a skeletal muscle cell.Know More
Nuclear division among multicellular organisms is of two types: mitosis and meiosis. Mitosis, which is associated with repair and growth of the organism, is the process of producing two identical diploid daughter cells. Meiosis, meanwhile, is involved in generating four haploid sex cells called gametes that are used for sexual reproduction.
Prior to mitotic cell division, a process called interphase occurs in the nucleus, where the genetic material contained within the deoxyribonucleic acid, or DNA, is replicated. After interphase, mitotic division follows, which is comprised of four major phases: prophase, metaphase, anaphase and telophase. Mitosis starts during prophase where the chromosomes condense and the nuclear envelope begins to disintegrate.
The centromeres and kinetochores align on the equator during metaphase. In anaphase, the two chromatids that form are pulled apart to polar opposites of the cell. During telophase, the events in prophase are reversed, where the chromosomes begin to uncoil and the nuclear envelope reforms. Cytokinesis, which refers to the division of the cytoplasm, generally occurs at the end of telophase and produces two identical cells. In some cell types, the cells continue to grow in size instead of separating into distinct daughter cells. This is typical of myoblasts found in skeletal muscle fibers, which contain several nuclei inside their cells.Learn more about Cells
A cell placed in a hypotonic solution will swell up or gain water, and it can possibly rupture if the excess water inside the cell is not removed. Although this can occur in cells without walls, this does not happen in cells that do have cell walls like plant cells. Similarly, freshwater organisms like protozoans contain vacuoles that remove water from inside their cells.Full Answer >
During cell division, a cell duplicates its own DNA to create two identical cells. The process of cell division, also called mitosis, occurs in five stages: prophase, metaphase, anaphase, telophase and interphase.Full Answer >
During cell division, a cell divides into two identical daughter cells. This process, called mitosis, has four stages: prophase, metaphase, anaphase and telophase.Full Answer >
During mitosis, a eukaryotic cell divides and forms two identical cells. Mitosis is a multi-step process, and the main goal is to ensure that each of the resulting daughter cells receives a copy of each chromosome.Full Answer >