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प्रश्न
Distinguish between mitosis and meiosis.
अंतर स्पष्ट करें
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उत्तर
| Mitosis | Meiosis | |
| 1. | In this, the nucleus divides only once. | In this, the nucleus divides twice (Meiosis I and Meiosis II) |
| 2. | Two daughter cells are formed. | Four daughter cells are formed. |
| 3. | It occurs in somatic cells and stem cells | It occurs in germ cells. |
| 4. | Daughter cells formed by mitotic division are diploid (2n). | Daughter cells formed by meiotic division are haploid (n). |
| 5. | Mitosis plays an important role in growth, repair, healing, and development. | Meiosis is important for the formation of haploid gametes and spores. |
| 6. | It is also known as equational division because the daughter cells have the same number of chromosomes as the parent cell. | Meiosis I is known as reductional division because the chromosome number is halved. Meiosis II is known as equational division because sister chromatids separate while the chromosome number remains the same. |
| 7. | The prophase stage is short and does not involve synapsis, crossing over, or chiasmata formation. | Prophase I is very long and consists of five stages. In zygotene, homologous chromosomes pair. In pachytene, crossing over occurs, and in diplotene, chiasmata are formed. |
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