A cell makes a copy of its DNA before mitosis occurs so there is a set of DNA for the daughter cell after mitosis has occurred. Because each cell needs its own set of DNA, there must be two sets of DNA present in a cell before it divides into two.Know More
Mitosis is the process of cell division that creates a new cell identical to the original. Somatic cells, such as muscles, hair and skin, undergo mitosis regularly in humans and other organisms. This is an important type of cell division needed to facilitate the repair of damaged cells, growth and replacement of old cells with new ones.
When a new cell is created, it must have the same library of genetic information all other cells in the body have access to. Because all the material in the new cell must come from the first cell, the original cell must make a copy of its DNA before completing the process of mitosis. These two sets of DNA only exist for as long as it takes the cell to undergo mitosis, which can be anywhere from 30 to 90 minutes in certain human cells. When the cell division is complete, both of the cells have a single identical copy of DNA.Learn more about Cells
Mitosis results in two identical daughter cells when the parent cell divides in half with each part receiving the DNA, organelles and cytoplasm needed to become a full cell. After mitosis, each cell uses the DNA it received as a template for the missing DNA.Full Answer >
RNA is important to cells because it relays information encoded in DNA to tiny organs within the cell, called ribosomes, which produce protein according to the RNA's instructions. RNA is thus vital to the basic functioning of the cell.Full Answer >
A sperm cell delivers its DNA to and fertilizes eggs, according to the National Center for Biotechnology Information. The BBC points out that this genetic material is contained in 23 chromosomes, which combine with the 23 chromosomes found in the female sex cell to make 23 pairs of chromosomes that contain all the genes for the new embryo.Full Answer >
Proteins are produced by stringing amino acids together in the order specified by messenger RNA strands that were transcribed from DNA in the cell nucleus. The process of synthesizing a protein is called translation, and it occurs on ribosomes in the cytoplasm of a cell.Full Answer >