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MITOSIS
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MEIOSIS
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1.
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Occurs in somatic cells.
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1.
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Occurs in reproductive cells.
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2.
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Consists of only one nuclear division.
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2.
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Consists of two nuclear divisions M-I and M-II.
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3.
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Cytokinesis takes place only once.
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3.
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May take place only once (simultaneous type) or twice (successive
type).
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4.
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Involves division of chromosomes.
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4.
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Involves separation of homologous
chromosomes in M-I and division of chromosomes in M-II.
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5.
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Dividing cells can be haploid or diploid.
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5.
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Dividing cells are diploid.
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6.
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Does not involve either pairing of homologous chromosomes
or crossing over.
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6.
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Pairing of homologous chromosomes and crossing
over occur during Prophase-I.
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7.
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Two daughter cells are formed.
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7.
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Four daughter cells are formed.
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8.
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Number of chromosomes present in the mother cell
is maintained in both the daughter cells. Therefore it is an equational
division.
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8.
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Diploid number of chromosomes is reduced to haploid
in each daughter cell. Therefore it is a reduction division.
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9.
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Original characters of the chromosomes are maintained
in the daughter cells.
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9.
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Chromosomal characters are altered due to "crossing
over" causing recombination of genes.
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10.
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Daughter cells are similar to each other and also to the original
mother cell.
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10.
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Daughter cells differ from each other as well as
from the original mother cell.
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11.
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Helps in growth and body repairs.
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11.
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Helps in the sexual reproduction and regulation of chromosome number
in the life cycle of sexually reproducing organism.
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