Meiosis vs mitosis

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Meiosis vs mitosis

  1. 1. Meiosis vs Mitosis Diffen › Science › Biology › Cellular Biology Cell division and reproduction can occur in two ways - mitosis and meiosis. Mitosis is a process of cell duplication, or reproduction, during which one cell gives rise to two genetically identical daughter cells. Meiosis, on the other hand, is a division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or sex cells, each possessing half the number of chromosomes of the original cell. Mitosis is used by single celled organisms to reproduce; it is also used for the organic growth of tissues, fibers, and mibranes. Meiosis is useful for sexual reproduction of organisms; The male and female sex cells, e.g. the spermazoa and egg, fuse to create a new, singular biological organism. Comparison chart Meiosis Mitosis 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. Function: sexual reproduction Cellular Reproduction & general growth and repair of the body 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. Pairing of Homologues: Yes No Number of Divisions: 2 1 Number of 4 2
  2. 2. Meiosis Mitosis Haploid Daughter Cells produced: Chromosome Number: Reduced by half Remains the same Steps: The steps of meiosis are Interphase, Prophase I, Metaphase I, Anaphase I, Telophase I, Prophase II, Metaphase II, Anaphase II and Telophase II. The steps of mitosis are Interphase, Prophase, Metaphase, Anaphase, Telophase and Cytokinesis Karyokenesis: Occurs in Interphase I Occurs in Interphase Cytokenesis: Occurs in Telophase I & Telohpase 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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