Parent cell

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A parent [[Cell|cell]] is a cell that can divide into 2 or more daughter cells, by either [[Mitosis|mitosis]] or [[Meiosis|meiosis]]. All somatic cells divide by mitosis, producing 2 identical daughter cells with the same ploidy as the parent cell. On the other hand, germline cells such as those found in the human testes and ovaries divide by meiosis, producing 4 non-identical, (usually) [[Haploid|haploid]] daughter cells. These cells are non-identical as a result of chromosomal [[Crossing_over|crossing over]], a major source of genetic variation. They are also haploid because they will go on to become [[Gametes|gametes]] and so at fertilisation, the maternal and paternal gametes will equally contribute half the needed number of chromosomes to make a [[Diploid|diploid]] cell.
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A parent [[Cell|cell]] is a cell that can divide into 2 or more daughter cells, by either [[Mitosis|mitosis]] or [[Meiosis|meiosis]]. All [[Somatic_cells|somatic cells]] divide by [[mitosis|mitosis]], producing 2 identical daughter cells with the same [[ploidy|ploidy]] as the parent cell. On the other hand, germline cells such as those found in the human testes and ovaries divide by[[Meiosis|meiosis]], producing 4 non-identical, (usually) [[Haploid|haploid]] daughter cells. These cells are non-identical as a result of chromosomal [[Crossing over|crossing over]], a major source of [[genetic variation|genetic variation]]. They are also [[Haploid|haploid]] because they will go on to become [[Gametes|gametes]] and so at [[Fertilisation|fertilisation]], the maternal and paternal [[gametes|gametes]] will equally contribute half the needed number of [[Chromosomes|chromosomes]] to make a [[Diploid|diploid]] cell.

Revision as of 18:29, 2 December 2017

A parent cell is a cell that can divide into 2 or more daughter cells, by either mitosis or meiosis. All somatic cells divide by mitosis, producing 2 identical daughter cells with the same ploidy as the parent cell. On the other hand, germline cells such as those found in the human testes and ovaries divide bymeiosis, producing 4 non-identical, (usually) haploid daughter cells. These cells are non-identical as a result of chromosomal crossing over, a major source of genetic variation. They are also haploid because they will go on to become gametes and so at fertilisation, the maternal and paternal gametes will equally contribute half the needed number of chromosomes to make a diploid cell.

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