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Summery of the Comparison of Mitosis and Meiosis
MITOSIS |
MEIOSIS |
Occurs in somatic cells |
Occurs in reproductive cells resulting in formation of gametes or spores |
Number of chromosomes remain constant after every division |
The number of chromosomes is reduced to half after division |
Has a single division of the chromosomes and nuclear |
A single division of the chromosome but a double division of the nuclear |
Same number of chromosomes remain |
Half the number of chromosomes remain |
Homologous chromosomes do not associate |
Homologous chromosomes associate |
Chiasmata is never formed |
Chiasmata may be formed |
Crossing over never occurs |
Crossing over may occur |
Two daughter cells are formed |
Four daughter cells formed although in female one is usually functional |
Daughter cells are identical to the parents (in absence of mutations) |
Daughter cells are genetically different from parental ones |
Prophase is shorter |
Prolonged and divided into sub-stages |
Chromosomes forms a single row at the equator of the spindle fiber |
Forms a double row at the equator of the spindle fiber |
Similarities between mitosis and meiosis
1.Both process involves the division of the parent cell
- In both process the chromosome migrates to the central plane and arrange themselves at the equator of the spindle during metaphase
- Cells cycling through interphase of both processes have an accumulation of energy to be used for other stages of division. During this stage there is also duplication of genetic materials and other cytoplasmic organelles
- prophase marks the disappearance ofnucleolus and centrioles move to the opposite poles
- Both start at the interphase stage
Differences between nuclear division and cell division
1 Nuclear division is the division of the nuclears alone while cell division involves nuclear division and other cellular processes
- cell division is proceeded by nuclear division
- nuclear division is similar in both plants and animals cells while cell division is different
Disadvantage of cell division
Cell division may results into formation and acceleration of Cancer causing cells