Look up: Meiosis

1. meiosis
   A two-stage type of cell division in sexually reproducing organisms. In meiosis, a diploid cell divides to produce four haploid cells, each with half the original chromosome content. For this reason, meiosis is often called a "reduction division". In organisms with a diploid life cycles, the products of meiosis are usually called gametes. In organisms with an alternation of generations, the products of meiosis are caled spores.
   Found on http://www.ucmp.berkeley.edu/glossary/gl
   
   
2. Meiosis
   The reduction division process by which haploid gametes and spores are formed, consisting of a single duplication of the genetic material followed by two mitotic divisions.
   Found on http://filebox.vt.edu/cals/cses/chagedor
   
   
3. meiosis
   The process in which a eukaryotic nucleus divides into nuclei whose ploidy is lower than that of the parent nucleus (typically, haploid nuclei being formed from diploid nuclei) and in which recombination usually occurs.
   Found on http://ppathw3.cals.cornell.edu/glossary
   
   
4. Meiosis
   The process of division of sexual cells in which the number of chromosomes in each nucleus is reduced to half the normal number found in normal somatic cells. When two sexual cells fuse, each contributes its half of the chromosomes. The resulting embryo contains the full chromosome complement. Cells with half the chromosomes are called haploids, while those with the full complement are diploids.
   Found on http://www.pestmanagement.co.uk/lib/glos
   
   
5. meiosis
   (Variation and inheritance) type of cell division which forms sex cells (gametes) each with half the usual number of chromosomes
   Found on http://www.bbc.co.uk/schools/gcsebitesiz
   
   
6. Meiosis
   Understatement.
   Found on http://www.poetsgraves.co.uk/glossary_of
   
   
7. meiosis
   [n] - (genetics) cell division that produces reproductive cells in sexually reproducing organisms
   Found on http://www.webdictionary.co.uk/definitio
   
   
8. Meiosis
   A form of cell division in which the cell with 46 chromosome (referred to as "diploid") gives rise to two cells with 23 chromosomes -"haploid"). More details. See also mitosis (below).
   Found on http://www.ifcresourcecentre.co.uk/gloss
   
   
9. Meiosis
   the type of cell division that occurs only in the ovaries and testicles, producing cells with half the genes of the original cell; these cells then form eggs and sperm
   Found on http://www.medichecks.com/glossary.cfm?l
   
   
10. Meiosis
    Meiosis: The process of germ cell formation. During meiosis, each chromosome pairs with the other chromosome in the pair and they exchange segments of genetic material. In both women and men, the autosomes (non-sex chromosomes) pair. In women, the X chromosomes pair; and in men, the X and Y chromosome pair. After the exchange of genetic material, t …
    Found on http://www.medterms.com/script/main/art.
    
    
11. meiosis
    a process of two consecutive specialised nuclear divisions leading to the formation of gametophytes Category: Medicine • the division of a nucleus in which half of the(unsplit)chromosomes move to the one side,the others to the other side of the nucleus Category: Medicine
    Found on http://www.mijnwoordenboek.nl/definition
    
    
12. meiosis
    A specialized form of nuclear division in which there are two successive nuclear divisions (meiosis I and II) without any chromosome replication between them. Each division can be divided into 4 phases similar to those of mitosis (pro-, meta-, ana- and telophase). Meiosis reduces the starting number of 4n chromosomes in the parent cell to n in each of the 4 daughter cells. Each cell receives only one of each homologous chromosome pair, with the maternal and paternal chromosomes being distributed randomly between the cells. This is vital for the segregation of genes. During the prophase of meiosis I (classically divided into stages: Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis), homologous chromosomes pair to form bivalents, thus allowing crossing-over, the physical exchange of chromatid segments. This results in the recombination of genes. Meiosis occurs during the formation of gametes in animals, which are thus haploid and fertilization gives a diploid egg. In plants meiosis leads to the formation of the spore by the sporophyte generation.
    Found on
    
    
13. Meiosis
    Mei·o"sis (mi*ō"sĭs) noun [ New Latin , from Greek mei`wsis , from meioy^n to make smaller, from mei`wn . See Meionite .] (Rhet.) Diminution; a species of hyperbole, representing a thing as being less than it really is.
    Found on http://www.encyclo.co.uk/webster/M/42
    
    
14. meiosis
    A specialised form of nuclear division in which there two successive nuclear divisions (meiosis I and II) without any chromosome replication between them. Each division can be divided into 4 phases similar to those of mitosis pro, meta, ana and telophase). Meiosis reduces the starting number of 4n chromosomes in the parent cell to n in each of the …
    Found on http://cancerweb.ncl.ac.uk/cgi-bin/omd?m
    
    
15. meiosis
    miosis noun (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
    Found on http://wordnet.princeton.edu/perl/webwn?
    
    
16. Meiosis
    In biology, `meiosis` (pronounced mi-o-sis or me-o-sis) is the process by which one diploid eukaryotic cell divides to generate four haploid cells often called gametes. The word `meiosis` comes from the Greek `meioun`, meaning `to make smaller,` since it results in a reduction in chromosome number in the gamete cell. Meiosis is essential for sexual reproduction and therefore occurs in all eukaryotes (including single-celled organisms) that repro...
    Found on http://en.wikipedia.org/wiki/Meiosis
    
    
17. Meiosis
    In biology, `meiosis` (pronounced mi-o-sis or me-o-sis) is the process by which one diploid eukaryotic cell divides to generate four haploid cells often called gametes. The word `meiosis` comes from the Greek `meioun`, meaning `to make smaller,` since it results in a reduction in chromosome number in the gamete cell. Meiosis is essential for sexual reproduction and therefore occurs in all eukaryotes (including single-celled organisms) that repro...
    Found on http://en.wikipedia.org/wiki/Meiosis
    
    
18. meiosis
    (mi-o´sis) the process of cell division by which reproductive cells (gametes) are formed. There are two successive divisions, meiosis I and meiosis II, in which four daughter cells are formed, each with the haploid number of chromosomes (23 in humans). As in mitosis, meiosis I and II are each divided into four phases: p...
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
19. Meiosis
    • (n.) Diminution; a species of hyperbole, representing a thing as being less than it really is.
    Found on http://thinkexist.com/dictionary/meaning
    
    
20. meiosis
    (from the article `litotes`) ...and `no mean feat.` Litotes is a stylistic feature of Old English poetry and of the Icelandic sagas, and it is responsible for much of their ...
    Found on http://www.britannica.com/eb/a-z/m/66
    
    
21. meiosis
    division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or sex cells, each possessing half the number of ... [17 related articles]
    Found on http://www.britannica.com/eb/a-z/m/66
    
    
22. meiosis
    meiosis (s), meioses (pl) 1. That process in the division of germ cells by which the number of chromosomes is reduced from the double or diploid number typical of somatic cells to the halved or haploid number characteristic of gametes. 2. The nuclear changes which take place in the last two cell divisions in the formation of germ cells. T...
    Found on http://www.wordinfo.info/words/index/inf
    
    
23. meiosis
    A special process of cell division comprising two nuclear divisions in rapid succession that result in four gametocytes, each containing half the number of chromosomes found in somatic cells. Syn: meiotic division [G. meisis, a lessening]
    Found on
    
    
24. meiosis
    The process of two consecutive cell divisions in the diploid progenitors of sex cells. Meiosis results in four rather than two daughter cells, each with a haploid set of chromosomes.
    Found on http://linkage.rockefeller.edu/wli/gloss
    
    
25. Meiosis
    The process of two consecutive cell divisions in the diploid progenitors of sex cells. Meiosis results in four rather than two daughter cells, each with a haploid set of chromosomes.
    Found on http://www.ornl.gov/sci/techresources/Hu