When prophase is going to end the nucleus membrane dissolves so that chromosomes are released easily. The chromosomes pair up so that both copies of the chromosome are together. Prophase: In this phase chromosomes condense into a shape of X that is easily visible under a microscope. Centrosomes are present outside the nucleus and they contain pairs of centrioles and during this phase microtubules extend from these centrosomes. Interphase: In this phase DNA is copied and this results in the formation of two identical sets of chromosomes. The process of meiosis occurs in five phases these five phases are as follows. So the main goal of mitosis is to replace worn out cells and for growth. Mitosis is a process of making new identical daughter cells from the parent cell. Mitosis not only helps in embryo development but also produces new cells and replaces the old and damaged cells in our body. The cell has divided, and the two identical cells are now ready to begin their first period of growth.Hint: Mitosis is a way of making more cells that are genetically similar to the parent cell. The changes now taking place are the reverse of those that occurred during prophase: the chromosomes uncoil, new membranes form around the nuclei, and the fibers of the spindle disappear. In the last phase-telophase-the cell divides.
In this way a complete set of chromosomes migrates toward each centriole. Once the chromatids separate, they are called chromosomes. As the third phase-anaphase-begins, the chromatids separate and move to opposite ends of the cell. The second phase of mitosis is metaphase, in which the chromosomes move into the equatorial plane of the spindle. Many of these from one centriole join with strands from the other to form the spindle. From the centrioles, long, thin strands extend in all directions. The long, threadlike material of the nucleus coils up into visible chromosomes, and the nuclear membrane disappears. In the first phase-prophase-a centriole, located outside the nucleus, divides. The process of mitosis is continuous, but it is possible to identify four general phases, each characterized by specific activity. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.
#INTERPHASE PROPHASE METAPHASE ANAPHASE TELOPHASE HOW TO#
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