Mitosis and meiosis are the means by which reproduction takes place. Mitosis creates an exact duplicate of cell so that old cells can be replaced, such as in skin, hair, and bones. Meiosis allows a cell to unite one half of its genetic makeup with a cell from another partner to create an entirely new organism.
Mitosis
Mitosis is the process by which two daughter cells are formed, each containing a complete set of chromosomes. Mitosis is the process by which an organism creates new cells, such as skin or bone. There are two parts to a cell's life interphase and mitosis. Interphase is the normal life of the cell when all of the growth and metabolism processes take place. Mitosis happens after interphase is complete and produces an
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Meiosis is broken into two parts called Meiosis I and Meiosis II.
Meiosis I
The stages of Meiosis I are called prophase I, metaphase I, anaphase I, and telophase I. Prophase I is like prophase in mitosis. However, in metaphase I, instead of pulling the chromosomes away from their duplicates, the microtubules attach so as to pull the like pairs, called homologues, apart and leave the chromosomes attached to their duplicates.
In anaphase I, the microtubules of the spindles pull the homologues apart.
In telephase I, the plasma membrane pinches the cell into two parts and the chromosomes are surrounded by nuclear material. At the end of meiosis I, two haploid cells have been created, but they still have duplicated chromosomes, so the cell must enter meiosis II.
Meoisis II
The purpose of meiosis II is to create cells with no duplicates, for purposes of reproduction. In meiosis II, there are now two cells going through the process. Prophase II and metaphase II occur just as in mitosis, but remember, there are two cells now.
During Anaphase II, the microtubules pull the duplicate chromosomes away from the originals.
During Telophase II, the plasma constricts and nuclei are formed.
Meiosis 2 is similar to mitosis, however, at the end of meiosis II, four haploid cells called gametes have been formed, each with no duplicate chromosomes. The chromatids of each chromosome are not identical
Mitosis and meiosis are similar in several ways and different in others. The similarities include that both processes involve IPMAT. IPMAT is interphase, prophase, metaphase, anaphase and telophase. The parent cells are diploid. They both end with cytokinesis. In Metaphase and Metaphase II, the sister chromatids line up along the center. Then in Anaphase and Anaphase II, these chromatids are split and pulled towards the centrosomes. The differences are that mitosis consists of 1 division while meiosis consists of 2. Four genetically different, haploid sex cells are the products of meiosis and 2 identical, diploid somatic cells from mitosis. Mitosis occurs in all organisms except viruses and meiosis only occurs in plants, animals, and fungi.
Mitosis: This is the process by which a cell duplicates the chromosomes in its cell nucleus in order to generate two identical daughter nuclei.
This study was performed in order to gain more knowledge on mitosis and meiosis. This lab was done by observing mitosis in plant and animal cells, comparing the relative lengths of the stages of mitosis in onion root tip cells, stimulating the stages of meiosis, observing evidence of crossing-over in meiosis using Sordaria fimicola, and estimating the distance of a gene locus from its centromere. Mitosis is the scientific term for nuclear cell division, where the nucleus of the cell divides, resulting in two sets of identical chromosomes. Mitosis is accompanied by cytokinesis in which the end result is two completely separate cells called daughter cells. There are four phases of mitosis: prophase, metaphase, anaphase and
Meiosis consists of one DNA replication and two nuclear divisions resulting in 4 daughter cells. The process which provides for genetic variation is crossing over. Crossing over occurs in the early stages when homologous chromosomes move together so that their chromatids form a tetrad. This is called synapsis and allows for the exchange of chromosome sections.
Response Feedback: Meiosis occurs only in replicating gametes or reproducing cells. In phase one, the number of chromosomes is reduced by half but the chromatid pairs remain together. In phase two, the chromatids split apart forming four daughter cells. Non-germ cells such as red blood cells or skin cells undergo mitosis.For more information on this topic, consult:Carol Mattson Porth and Glen Matfin, Pathophysiology, 8th Edition,
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 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.
Mitosis is the nuclear division that produces two nuclei containing chromosomes identical to the parental nucleus. Mitosis is divided into five stages; prophase, prometaphase, metaphase, anaphase, and telophase.
Meiosis II has 5 steps: Prophase II, Metaphase II, Anaphase II, Telophase, and Cytokinesis. First, the chromosomes consisting of two chromatids become visible in Prophase II. In Metaphase II, the sister chromatids line up in the middle of the cell, then pull apart during Anaphase II. Finally, the nuclear membrane reforms and the cells
Chromosome pairs line up across the equator of the spindle at metaphase I (5). In anaphase I the chromosomes separate and travel to opposite ends of the spindle. The chromosomes migrate to the equators of two new spindles for metaphase 2 (7). Next the chromatids are pulled apart in anaphase 2 to form four clusters of chromosomes in telophase 2. The nuclear envelopes reform around four haploid nuclei that will give rise gamete
Inside the human body, there are two different cells who help the reproductive system. Those are Mitosis and meiosis which are similar and different than one another.
Mitosis and Meiosis are very similar in a many different ways. First mitosis and meiosis are both diploid parent cells. Also mitosis and meiosis both consist of the same basic steps, prophase, metaphase, anaphase, and telophase. They are also the same because, during anaphase the sister chromatids are separated to opposite poles. Mitosis and Meiosis are similar because in
These bivalents line up along the equator during metaphase I, the arrangement of the bivalent is completely random and relative to the orientation of the other bivalents, this is known as the independent assortment of chromosomes. This is followed by anaphase I where the homologous chromosomes separate and move to the opposite poles of the cell. At telophase I the cell divides into two, each cell contains one chromosome from each homologous pair. The second stage of meiosis is similar to mitosis.