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Meiosis
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Mitosis
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Definition:
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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.
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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.
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Function:
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sexual reproduction
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Cellular Reproduction & general growth
and repair of the body
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Type of Reproduction:
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Sexual
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Asexual
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Occurs in:
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Humans, animals, plants, fungi
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all organisms
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Genetically:
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different
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identical
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Crossing Over:
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Yes, mixing of chromosomes can occur.
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No, crossing over cannot occur.
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Pairing of Homologs:
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Yes
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No
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Number of Divisions:
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2
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1
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Number of Daughter Cells produced:
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4 haploid cells
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2 diploid cells
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Chromosome Number:
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Reduced by half
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Remains the same
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Steps:
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The steps of meiosis are Interphase,
Prophase I, Metaphase I, Anaphase I, Telophase I, Prophase II, Metaphase II,
Anaphase II and Telophase II.
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The steps of mitosis are Interphase,
Prophase, Metaphase, Anaphase, Telophase and Cytokinesis
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Karyokinesis:
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Occurs in Interphase I
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Occurs in Interphase
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Cytokinesis:
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Occurs in Telophase I & Telophase II
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Occurs in Telophase
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Centromeres Split:
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The centromeres do not separate during
anaphase I, but during anaphase II
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The centromeres split during Anaphase
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Creates:
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Sex cells only: Female egg cells or Male
sperm cells
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Makes everything other than sex cells
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Discovered by:
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Oscar Hertwig
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Walther Flemming
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