Answer:
1. Growth and development of organisms.
2. Repair of tissues and maintenance of the body organs
3. Reproduction in organisms sexually occurs by mitosis
4. Mitosis allows for cell replacement
5. Formation and replication of genes (DNA) materials
6. Development of the embryo
7. Growth of tumor occurs by mitosis thus the uncontrollable division of cells such cancer cells.
Step-by-step explanation:
Human cells undergo mitosis for several important reasons:
1. Growth and Development: Mitosis is a fundamental process during the growth and development of an organism. It allows for the increase in cell number, which is necessary for an organism to reach its full size.
2. Tissue Repair and Maintenance: Mitosis plays a crucial role in tissue repair and maintenance. When tissues are damaged due to injury or wear and tear, cell division ensures that new cells are generated to replace the old or damaged ones. For example, skin cells constantly undergo mitosis to replace those lost through daily activities.
3. Asexual Reproduction: Some organisms, such as certain plants and animals, can reproduce asexually through mitosis. In this process, a single parent cell divides to produce genetically identical offspring. This is especially common in simple organisms like bacteria and some plants.
4. Cell Replacement: In many tissues and organs, cells have a limited lifespan. Mitosis allows for the continual replacement of these cells to maintain proper functioning. For instance, red blood cells have a short lifespan, and bone marrow constantly produces new ones through mitosis.
5. Genetic Stability: Mitosis ensures that the genetic information (DNA) in the parent cell is accurately duplicated and distributed to the two daughter cells. This process helps maintain genetic stability and prevents the accumulation of errors or mutations.
6. Embryonic Development: During embryonic development, the fertilized egg (zygote) undergoes numerous rounds of mitosis to form the complex tissues and organs of the developing embryo.
7. Tumor Growth: In some cases, mitosis can lead to the growth of tumors, which can be harmful. Uncontrolled cell division, often associated with mutations, can result in the formation of cancerous cells. Understanding mitosis is crucial in cancer research and treatment.