difference between meiotic and meiosis

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difference between meiotic and meiosis

Posted by Khushi Dua 6 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years, 8 months ago

Mitosis: (i) A somatic cell divides once. Cytokinesis (the division of the cytoplasm) occurs at the end of telophase.
(ii) Two daughter cells are produced. Each cell is diploid containing the same number of chromosomes.
(iii) The resulting daughter cells in mitosis are genetic clones (they are genetically identical). No recombination or crossing over occur.
(iv) Tetrad formation does not occur.

Meiosis:(1) A reproductive cell divides twice. Cytokinesis happens at the end of telophase I and telophase II.
(ii) Four daughter cells are produced. Each cell is haploid containing one-half the number of chromosomes as the original cell.
(iii) The resulting daughter cells contain different combinations of genes. Genetic recombination occurs as a result of the random segregation of homologous chromosomes into different cells and by the process of crossing over.
(iv) In prophase I, pairs of homologous chromosomes line up closely together forming what is called a tetrad. A tetrad consists of four chromatids (two sets of sister chromatids).

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CBSE > Class 10 > Science