Why is Mitosis Important?
Mitosis is important for three main reasons: development and growth cell replacement and asexual reproduction.
1. Development and growth
After meiosis has produced a gamete, and this has fused with another gamete to form an embryo, the embryo grows using mitosis. This growth continues throughout an organism’s life, in plants, animals, and fungi. In this way, the original chromosomal set is preserved.
2. Cell replacement
This occurs when the original cell is damaged or wounded. New cells are created to replace those that were damaged. Examples of this are the healing of a cut or a broken bone. When old cells die, new ones replace them to ensure continuing functionality.
3. Asexual reproduction
Single-celled organisms and certain multicellular organisms use mitosis for asexual reproduction. This includes reproduction by fragmentation, as in the case of planaria, and reproduction by budding, as in the case of sea anemones. Many plants reproduce using mitosis.
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Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell? divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.
Here is the process of Mitosis:Prophase
- This is the first step. The nucleus is still in the cell. The chromosomes are condensing which makes them to thicken and be visible.
- In this stage, the chromosomes line up in the middle of the cell, thus the nucleus is not in the cell anymore.
- The chromosomes separate from each other, and move to the two poles of the cell. The chromosomes move because of fibers that are called spindles.
- The chromosomes are on the actual ends of the cell, and a new nucleus is forming within the two sides.Cytokinesis
- this is responsible for the final separation into two cells by separating the cytoclasm, which completes the process of mitosis.Purpose of MitosisWithout mitosis, we cannot understand Growth and Repair happens because both of them requires a lot of cells of the same type. Understanding mitosis is also important for cancer research. Cancer is uncontrolled cell growth, which is also uncontrolled mitosis. Meiosis What does it mean?Meiosis is a process that contributes to genetic variety. Unlike Mitosis, which makes body cells, Meiosis creates sperm cells and egg cells, otherwise known as gametes. How does Meiosis occur? / What is the process?
Here is the process:
1. Prophase I
- Where the chromosomes starts to condense and thicken. They will actually line up with their homologous pair. Homologous means that the cells are approximately of the same height and contain the same type of genes.
2. Metaphase I
- Chromosomes are in the middle, by pair.
3. Anaphase I
- The chromosomes move to the two poles of the cell. The chromosomes move because of fibers that are called spindles.
4. Telophase I
- The chromosomes are on the actual ends of the cell, and a new nucleus is forming within the two sides.
5. Prophase II
- Spindles form again
6. Metaphase II
- The chromosomes are lined in the middle without pairs.
7. Anaphase II
- The chromotids are pulled away from each other by the spindles.
8. Telophase II
- The nucleus is reforming and the cells are starting to separate, which makes 4 cells.
- The final separation of the cells.Purpose of MeiosisMeiosis is essential to many sexually-reproducing animals to ensure that the same number of chromosomes in the offspring as in the parents