Garlic Root Tip - Miosis
Biology
Inheritance – Mitotic Squash of Garlic Root Tip
Mitosis is the process of cell division; it is the process by which a eukaryotic cell separates the chromosomes in its cell nucleus into two identical sets in two nuclei. It is generally followed immediately by cytokinesis, which divides the nuclei, cytoplasm, organelles and cell membrane into two cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic phase of the cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.
The process of mitosis is complex and highly regulated. The sequence of events is divided into phases, corresponding to the completion of one set of activities and the start of the next. These stages are interphase, prophase, metaphase, anaphase and telophase. During mitosis the pairs of chromosomes condense and attach to fibers that pull the sister chromatids to opposite sides of the cell. The cell then divides in cytokinesis, to produce two identical daughter cells.
In plants, growth is greatest at the shoot and root tips. Here mitosis occurs in particular areas called the meristems (a meristem is a tissue in all plants that consists of meristematic cells. These are cells that have not yet a special function. They are found in zones of the plant where growth can take place).
https://dbscience3.wikispaces.com/Aaron
Interphase:
The cell is engaged in metabolic activity and performing it’s preparation for mitosis. DNA has replicated, but has not formed the condensed structure of chromosome. They remain as loosely coiled chromatin. The nuclear membrane is still intact to protect the DNA molecules from undergoing mutation. During interphase DNA in the nucleus doubles and new organelles, such as mitchondria, are made.
Prophase:
The chromosomes become visible as long thin threads, they start to coil up and become thicker and shorter and a
Inheritance – Mitotic Squash of Garlic Root Tip
Mitosis is the process of cell division; it is the process by which a eukaryotic cell separates the chromosomes in its cell nucleus into two identical sets in two nuclei. It is generally followed immediately by cytokinesis, which divides the nuclei, cytoplasm, organelles and cell membrane into two cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic phase of the cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.
The process of mitosis is complex and highly regulated. The sequence of events is divided into phases, corresponding to the completion of one set of activities and the start of the next. These stages are interphase, prophase, metaphase, anaphase and telophase. During mitosis the pairs of chromosomes condense and attach to fibers that pull the sister chromatids to opposite sides of the cell. The cell then divides in cytokinesis, to produce two identical daughter cells.
In plants, growth is greatest at the shoot and root tips. Here mitosis occurs in particular areas called the meristems (a meristem is a tissue in all plants that consists of meristematic cells. These are cells that have not yet a special function. They are found in zones of the plant where growth can take place).
https://dbscience3.wikispaces.com/Aaron
Interphase:
The cell is engaged in metabolic activity and performing it’s preparation for mitosis. DNA has replicated, but has not formed the condensed structure of chromosome. They remain as loosely coiled chromatin. The nuclear membrane is still intact to protect the DNA molecules from undergoing mutation. During interphase DNA in the nucleus doubles and new organelles, such as mitchondria, are made.
Prophase:
The chromosomes become visible as long thin threads, they start to coil up and become thicker and shorter and a
References: R.Aaron, (2011), Mitosis [ONLINE]. Available at: https://dbscience3.wikispaces.com/Aaron [Accessed 20 February 11]. Digital Media. 2011. Cell Division. [ONLINE] Available at: http://iknow.net/cell_div_education.html. [Accessed 15 February 11] Sabine Heinhorst. 2002. Differences between Mitosis of Animal and Plant Cells. [ONLINE] Available at: http://madsci.org/posts/archives/2002-01/1012526835.Cb.r.html. [Accessed 15 February 11]. L.A. Faddah, (2009), Mitosis [ONLINE]. Available at: http://www2.mbusd.org/staff/pware/images/CellCycle.jpg [Accessed 16 February 11]. Pearson Education. 2010. Metaphase. [ONLINE] Available at: http://www.phschool.com/science/biology_place/biocoach/mitosisisg/meta.html. [Accessed 20 February 11]. Department of Biochemistry and Molecular Biophysics, Arizona. 2004. Cell Cycle. [ONLINE] Available at: http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells3.html. [Accessed 20 February 11]. R. Fenwick. 2010. Cell Cycle. [ONLINE] Available at: http://bilingualbiology11a.blogspot.com/2010/12/cell-cycle-mitosis-and-meiosis.html. [Accessed 21 February 11].