meiosis

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meiosis
top to bottom:In meiosis a parent cell replicates and recombines, divides once to create two daughter cells, then divides again creating four daughter cells, each of which has half the genetic content of the original parent cell.

mei·o·sis

 (mī-ō′sĭs)
n. pl. mei·o·ses (-sēz′)
1. Genetics The process of cell division in sexually reproducing organisms that reduces the number of chromosomes from diploid to haploid, as in the production of gametes.
2. Rhetorical understatement.

[Greek meiōsis, diminution, from meioun, to diminish, from meiōn, less; see mei- in Indo-European roots.]

mei·ot′ic (-ŏt′ĭk) adj.
mei·ot′i·cal·ly adv.

meiosis

(maɪˈəʊsɪs)
n, pl -ses (-ˌsiːz)
1. (Biology) a type of cell division in which a nucleus divides into four daughter nuclei, each containing half the chromosome number of the parent nucleus: occurs in all sexually reproducing organisms in which haploid gametes or spores are produced. Compare mitosis See also prophase2
2. (Rhetoric) rhetoric another word for litotes
[C16: via New Latin from Greek: a lessening, from meioun to diminish, from meiōn less]
meiotic adj
meiˈotically adv

mei•o•sis

(maɪˈoʊ sɪs)

n.
1. part of the process of gamete formation in sexual reproduction consisting of chromosome conjugation and two cell divisions after which the chromosome number is reduced by half. Compare mitosis.
2. expressive understatement, esp. litotes.
[1580–90; < Greek meíōsis a lessening =meiō-, variant s. of meioûn to lessen (derivative of meíōn less) + -sis -sis]
mei•ot•ic (maɪˈɒt ɪk) adj.
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meiosis
In early prophase, chromosomes line up to form pairs, centrioles move toward opposite ends of the cell, and the membrane surrounding the nucleus disappears. In late prophase, the chromatids line up along the center of the cell. During metaphase, each member of a chromatid pair becomes attached to spindle fibers from opposite ends of the cell. In anaphase, the chromosomes from each chromatid pair separate and begin to move toward opposite ends of the cell. During telophase, the cell divides into two new daughter cells, each with half the original number of chromosomes. In second telophase, each of the two daughter cells from the first division divides again to produce a total of four daughter cells, each having just a single set of chromosomes.

mei·o·sis

(mī-ō′sĭs)
A type of cell division, occurring in two phases, that reduces the number of chromosomes in reproductive cells to half the original number. It results in the production of reproductive cells (called gametes) in animals and the formation of spores in plants, fungi, and most algae. The first phase of meiosis involves duplication and then separation of the chromosomes, followed by division into two daughter cells that each contain half the number of chromosomes as the original cell. In the second phase, each daughter cell divides to form an additional reproductive cell. See Note at mitosis.

meiosis

an expressive understatement, especially litotes. — meiotic, adj.
See also: Rhetoric and Rhetorical Devices
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.meiosis - (genetics) cell division that produces reproductive cells in sexually reproducing organismsmeiosis - (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)
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
anaphase - the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
cell division, cellular division - the process in reproduction and growth by which a cell divides to form daughter cells
cytokinesis - organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells
karyokinesis - organic process consisting of the division of the nucleus of a cell during mitosis or meiosis
metaphase - the second stage of meiosis
nondisjunction - meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells
prophase - the first stage of meiosis
segregation - (genetics) the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametes
telophase - the final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle
2.meiosis - understatement for rhetorical effect (especially when expressing an affirmative by negating its contrary); "saying `I was not a little upset' when you mean `I was very upset' is an example of litotes"
understatement - a statement that is restrained in ironic contrast to what might have been said
rhetorical device - a use of language that creates a literary effect (but often without regard for literal significance)
Translations
meióza
Meiose
meioosi
meiózis
meiose

meiosis

[maɪˈəʊsɪs] N (meioses (pl)) [maɪˈəʊsiːz]
1. (Bio) → meiosis f
2. (= litotes) → lítote f

meiosis

n pl <-ses> (Biol) → Meiose f

meiosis

[maɪˈəʊsɪs] nmeiosi f

mei·o·sis

n. meiosis, proceso de subdivisión celular que resulta en la formación de gametos.
References in periodicals archive ?
This event could restore a biparental diploid cell line provided that the detrimental extra PN is excluded and even produce a normal embryo if the haploid cell does not develop further.
Under the terms of the agreement, Thermo Fisher will market and distribute Horizon's X-Man human haploid and diploid isogenic cell line collection and will further offer Horizon's X-Man haploid cell line generation service to its worldwide customer base with the exception of Japan.
2013) two pairs of sequence-specific primers were used to detect two alleles (mfa1 and mfa2) at locus a, a mating type locus that controls haploid cell fusion of two U.
During mammalian egg development, unequal cell division during meiosis results in one large haploid cell (the egg) and two or three small cells called polar bodies, which eventually degenerate.
A typical question might be as basic as, ``How many chromosomes are in a haploid cell of a human?
A single ancestral haploid cell of each clone was used to develop two populations composed of identical cells.
Derivation of a haploid cell line from Vitis vinifera and importance of stage of meiotic development of anthers for haploid culture of this and other genera.
megaspore: Haploid cell produced by meiosis in the ovules of angiosperms; a single megasporocyte produces four megaspores, only one of which remains functional.
These haploid cells, which fuse to generate a diploid zygote, use highly