Speech On Mitosis

     More than one celled organisms grow by way of mitosis and the cytoplasmic division of body cells. On the other hand, meiosis occurs only in germ cells, which are put aside for the formation of gametes (sperm and egg). Reproduction by meiosis allows for species survival and it increases genetic variability.

Website to go for quizzes and activities: Print out the quizzes for mitosis and meiosis http://www.phschool.com/science/biology_place/labbench/

In most eukaryotes, the nuclear envelope that separates the DNA from the cytoplasm disassembles. The chromosomes align themselves in a line spanning the cell. As the cell elongates, corresponding sister chromosomes are pulled toward opposite ends.

In the onion root tip, regions other than the apical (or at top of) meristem contain cells that are not actively dividing. These cells are in interphase. In this case, they would represent the majority because cells spend most of their time in interphase anyway. They are elongating, differentiating, and performing their functions for the organism. Mitotic stages would not have been found in these areas.

Compare and Contrast Mitosis and Meiosis Meiosis and mitosis describes the process by which cells divide, either by asexual or sexual reproduction to produce a new organism. Meiosis is a form of cell division that produces gametes in humans these are egg cells and sperms, each with reduced or halved number of chromosomes. The number of chromosomes is restored when two gametes fuse together to form a zygote. A cell with two copies of each chromosome is called diploid cell and a cell with one copy of each chromosome is called a haploid cell.

“All types of cells undergo mitosis during formation of the embryo, but many adult cells, such as nerve cells, lens cells of the eye, and muscle cells, lost their ability to replicate and divide. The cells of other tissues, particularly epithelial cells [e.g., of the intestine, lung, skin), divide continuously and rapidly, competing the entire cell cycle in less than 10 hours” (McChance & Huether, pg. 35).

Mitosis is the process of duplicating nuclear material one cell becomes two cells. A cell contains 46 chromosomes, this is known as diploid. This process involves prophase, metaphase, anaphase, and telophase. Mitosis ensures the continuation of the organism and helps the body build and repair. Meiosis on the other hand is for production of haploid cells, 23 chromosomes, that together with another human, new organisms are created.

The phase of mitosis proceeding anaphase in which two daughter cells are formed, their nuclei are formed, chromosomes unravel, and the cleavage furrow closes the gap between them and separates them (cytokinesis occurs).

Mitosis happens in the reproduction of unicellular organisms and in the addition of cells to a tissue or organ in a multicellular organism.

Mitosis - the division of a cell 's nucleus resulting in two daughter nuclei, each with the same number of chromosomes as the original nucleus.

In genetics, the way people retrieve their genes and traits is through cell division; mitosis and meiosis. Mitosis in cell division is the process in making body cells. There are 7 stages in mitosis; interphase, prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis. In interphase, the cell is growing normally and synthesizes with organelles. In prophase, changes occur in the cell and parts of the structures begin to break down, setting the stage for chromosome division. Prometaphase is the stage where the chromosomes are sorted and made very compact, and metaphase is when the chromatids of each chromosome are attached to a microtube to form a spindle. Anaphase it the process in which the chromosomes split, leading into telophase, which is where the chromatids travel to opposite poles in a cell and new membranes form around the nuclei. The final stage in mitosis, cytokinesis, is when the chromatids split in two.

Mitosis produces two cells, identical to each other and the parent cell. This means that each chromosome is copied exactly. During the mitosis cell cycle there are 6 stages, Interphase, Prophase, Metaphase, Anaphase, Telophase and Cytokinesis. Sometimes the cell divide uncontrollably. This results in a large mass of cells called a tumor. If tumor successfully gets into other body tissue the result is

- Eat smaller sized cells to get mass as well as end up being bigger

Yes, we could locate the various stages of mitosis. The prophase, metaphase, anaphase, and telophase stages were clearly present in the cells.

Chromatin- a collection of separate structures called Chromosomes. Within the nucleus the DNA is organized along with proteins into Chromatin. During Mitosis, the chromosomes condense into what is known as Chromosomes, which allows the genetic information of the previous cell to be passed on.