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Introduction to Mitosis Video Lecture | Zoology Optional Notes for UPSC
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FAQs on Introduction to Mitosis Video Lecture - Zoology Optional Notes for UPSC
| 1. What is mitosis? |  |
Ans. Mitosis is a process of cell division in which a single cell divides into two identical daughter cells. It is essential for growth, repair, and maintenance of multicellular organisms.
| 2. What are the stages of mitosis? | |
Ans. The stages of mitosis are prophase, metaphase, anaphase, and telophase. During prophase, the chromosomes condense, the nuclear envelope breaks down, and the spindle fibers form. In metaphase, the chromosomes line up along the center of the cell. Anaphase is when the sister chromatids separate and move towards opposite poles. Telophase is the final stage where the nuclear envelope re-forms, and the chromosomes decondense.
| 3. How does mitosis differ from meiosis? | |
Ans. Mitosis results in the formation of two identical daughter cells with the same number of chromosomes as the parent cell. Meiosis, on the other hand, is a type of cell division that produces gametes with half the number of chromosomes. Meiosis involves two rounds of cell division, resulting in four haploid daughter cells.
| 4. What is the significance of mitosis in multicellular organisms? | |
Ans. Mitosis plays a crucial role in the growth and development of multicellular organisms by producing new cells for tissue repair, replacement, and growth. It helps maintain a constant number of cells in the body and ensures genetic stability during cell division.
| 5. What happens if mitosis is not properly regulated? | |
Ans. If mitosis is not properly regulated, it can lead to various abnormalities, including chromosomal mutations, genetic disorders, and uncontrolled cell growth (cancer). Proper regulation of mitosis is essential to maintain the integrity of an organism's DNA and prevent the development of diseases.
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