Differences Between Mitosis and Meiosis
For: Science Class 11
Subject: Biology
Mitosis cell division: The process of cell division in which all the chromosomes replicate and separate into two groups having equal number of chromosomes as their parent cell. Thus two nuclei are formed.
Meiosis Cell Division: The process of cell division which takes place in a diploid cell and produces four haploid cell is meiosis cell division i.e. Each cell having half the number of chromosomes as that of parent cell.
| Mitosis | Meiosis |
It occurs in somatic cells
Mitosis division completed only in one division
Prophase
It is very short
Synapses is absent
No coiling and no replication takes place
No chiasmata formation takes place
No crossing over takes place
No Variation occurs
Metaphase
One metaphasic plate is formed
Contromere divides longitudinally
Anaphase
Two chromatids of each chromosome separate and move towards opposite pole
Each chromosome is single stranded
Telophase
Nucleus id diploid
Two nuclei are formed
Two cells are produced after cytokinesis
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It occurs in reproductive cells
Meiosis division is completed in two successive divisions
Prophase
Prophase is very long Subdivided into 5 sub phases
In Zygotene synapses occurs
In Pahcytene homologous chromosome undergo coiling and replication occurs
In diplotene chiasmata formation and crossing over takes place
Variation occurs
Metaphase
Two metaphase plate is formed
Centromere does not divide in Meiosis I but in II
Anaphase
Homologous chromosomes separate and move towards opposite pole
Each chromosome is double stranded n meiosis I
Telophase
Nuclei are haploid
Four nuclei are formed after Telophase II
Four cells are produced after cytokinesis II
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Tags:
Biology