Question:
differences between miosis and mitosis http://www.examfear.com/question/6462/detail.htm
Answer:
| Meiosis | Mitosis | |
|---|---|---|
| Type of Reproduction | Sexual | Asexual |
| Occurs in | Humans, animals, plants, fungi. | All organisms. |
| Genetically | Different | Identical |
| Crossing Over | Yes, mixing of chromosomes can occur. | No, crossing over cannot occur. |
| Definition | A type of cellular reproduction in which the number of chromosomes are reduced by half through the separation of homologous chromosomes, producing two haploid cells. | A process of asexual reproduction in which the cell divides in two producing a replica, with an equal number of chromosomes in each resulting diploid cell. |
| Pairing of Homologs | Yes | No |
| Function | Genetic diversity through sexual reproduction. | Cellular reproduction and general growth and repair of the body. |
| Number of Divisions | 2 | 1 |
| Number of Daughter Cells produced | 4 haploid cells | 2 diploid cells |
| Chromosome Number | Reduced by half. | Remains the same. |
| Steps | (Meiosis 1) Prophase I, Metaphase I, Anaphase I, Telophase I; (Meiosis 2) Prophase II, Metaphase II, Anaphase II and Telophase II. | Prophase, Metaphase, Anaphase, Telophase. |
| Karyokinesis | Occurs in Interphase I. | Occurs in Interphase. |
| Cytokinesis | Occurs in Telophase I and in Telophase II. | Occurs in Telophase. |
| Centromeres Split | The centromeres do not separate during anaphase I, but during anaphase II. | The centromeres split during anaphase. |
| Creates | Sex cells only: female egg cells or male sperm cells. | Makes everything other than sex cells. |
| Discovered by | Oscar Hertwig | Walther Flemming |
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