Biology
- Mitosis Vs ...
Mitosis can be compared to a couple of different cell actions. But what makes it different?Mitosis is the process of which a cell divides and creates copies of itself, the main purpose of this being to help the organism grow or to replace cells that are...
- #31 Control Of Cell Division, Stem Cell, Haploid And Diploid Cells
Each cell contains genes that help to control when it divides. Cells divide by mitosis only when required. When receives signals from neighbouring cells, it responds by dividing or not dividing. If this control goes wrong, cells may not divide when they...
- # 28.2 The Mitotic Cell Cycle - Syllabus 2016
5.1 Replication and division of nuclei and cells 5.2 Chromosome behaviour in mitosis When body cells reach a certain size they divide into two. Nuclear division occurs first, followed by division of the cytoplasm. The mitotic...
- # 28.1 The Mitotic Cell Cycle - Syllabus 2015
? Replication and division of nuclei and cells ? Understanding of chromosome behaviour in mitosis Learning Outcomes Candidates should be able to: (a) explain the importance of mitosis in the production of genetically identical cells, growth, repair...
- Metaphase
?? Term: metaphase Literally meaning: ?after appearance?Origin: Anc Greek?? ????/meta(=after, next to)?????/phasis(=stage) > ?????/phasko(=imperfect tense of verb ?????/phemi(=to appear, to show, to manifest, to aver)Coined/HistoryEduard Strasburger...
Biology
Comparison between mitosis and meiosis
| Mitosis | Meiosis |
| 1. It occurs in somatic cells | It occurs in reproductive cells |
| 2. The whole process completes in one sequence | The whole process completes in two sequences (meiosis I and meiosis II) |
| 3. It involves only one nuclear division | Two nuclear division |
| 4. The prophase is of short duration and without any sub-stages | The prophase is of longer duration with 5 sub-stages |
| 5. No synapsis takes place between the homologous chromosomes | Synapsis takes place between the homologous chromosomes |
| 6. Chiasma and crossing over are absent | Present |
| 7. During metaphase the centromere is directed towards the equator of the dividing cell | During metaphase the centromere is directed towards the poles of the dividing cell |
| 8. The chromosome number remains the same as that of the parent cell | The chromosomes number is reduced to half |
| 9. Two daughter cells are produced | Four daughter cells are produced |
| 10. It helps the organism in asexual reproduction | It helps the organism in sexual reproduction |
- Mitosis Vs ...
Mitosis can be compared to a couple of different cell actions. But what makes it different?Mitosis is the process of which a cell divides and creates copies of itself, the main purpose of this being to help the organism grow or to replace cells that are...
- #31 Control Of Cell Division, Stem Cell, Haploid And Diploid Cells
Each cell contains genes that help to control when it divides. Cells divide by mitosis only when required. When receives signals from neighbouring cells, it responds by dividing or not dividing. If this control goes wrong, cells may not divide when they...
- # 28.2 The Mitotic Cell Cycle - Syllabus 2016
5.1 Replication and division of nuclei and cells 5.2 Chromosome behaviour in mitosis When body cells reach a certain size they divide into two. Nuclear division occurs first, followed by division of the cytoplasm. The mitotic...
- # 28.1 The Mitotic Cell Cycle - Syllabus 2015
? Replication and division of nuclei and cells ? Understanding of chromosome behaviour in mitosis Learning Outcomes Candidates should be able to: (a) explain the importance of mitosis in the production of genetically identical cells, growth, repair...
- Metaphase
?? Term: metaphase Literally meaning: ?after appearance?Origin: Anc Greek?? ????/meta(=after, next to)?????/phasis(=stage) > ?????/phasko(=imperfect tense of verb ?????/phemi(=to appear, to show, to manifest, to aver)Coined/HistoryEduard Strasburger...