Rucete ✏ Biology In a Nutshell
1. Purpose
- Mitosis: Growth, repair, asexual reproduction
- Meiosis: Sexual reproduction (gamete formation)
2. Type of Cells
- Mitosis: Occurs in somatic (body) cells
- Meiosis: Occurs in germ cells (reproductive cells)
3. Number of Divisions
- Mitosis: One division
- Meiosis: Two successive divisions (Meiosis I and II)
4. Number of Daughter Cells
- Mitosis: Produces 2 identical diploid cells (2n)
- Meiosis: Produces 4 genetically different haploid cells (n)
5. Genetic Identity
- Mitosis: Daughter cells are genetically identical to the parent
- Meiosis: Daughter cells are genetically unique
6. Crossing Over
- Mitosis: No crossing over
- Meiosis: Crossing over occurs in Prophase I, increasing genetic variation
7. Chromosome Number
- Mitosis: Maintains the same number of chromosomes (2n → 2n)
- Meiosis: Reduces chromosome number by half (2n → n)
8. Function in Organisms
- Mitosis: Used for tissue growth, regeneration, and asexual reproduction
- Meiosis: Used to produce gametes (sperm and egg), enabling genetic diversity
Tags:
Biology in a nutshell