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metaphase
met·a·phase M0247600 (mĕt′ə-fāz′)n. The stage of mitosis and meiosis, following prophase and preceding anaphase, during which the chromosomes are aligned along the metaphase plate.metaphase (ˈmɛtəˌfeɪz) n1. (Biology) the second stage of mitosis during which the condensed chromosomes attach to the centre of the spindle. See also prophase1, anaphase1, telophase12. (Biology) the corresponding stage of the first division of meiosismet•a•phase (ˈmɛt əˌfeɪz)
n. the stage in mitosis or meiosis in which the duplicated chromosomes line up along the equatorial plate of the spindle. [1885–90] met·a·phase (mĕt′ə-fāz′) The stage of cell division in which the spindle forms and chromosomes line up along the center of the cell. In mitosis, metaphase is preceded by prophase and followed by anaphase. See more at meiosis, mitosis.Thesaurus| Noun | 1. |  metaphase - the second stage of meiosis meiosis, miosis, reduction division - (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)phase of cell division - a stage in meiosis or mitosis | | 2. | metaphase - the second stage of mitosismitosis - cell division in which the nucleus divides into nuclei containing the same number of chromosomesphase of cell division - a stage in meiosis or mitosis |
TranslationsMetaphase
metaphase[′med·ə‚fāz] (cell and molecular biology) The phase of mitosis during which centromeres are arranged on the equator of the spindle. The phase of the first meiotic division when centromeric regions of homologous chromosomes come to lie equidistant on either side of the equator. Metaphase one of the stages of mitotic cellular division. Two periods of metaphase are distinguished. The first is metakinesis, during which the chromosomes concentrate in the equatorial region of the spindle and form what is called the equatorial plate. There are a number of hypotheses regarding the mechanism of metakinesis; the trajectories of the chromosomes have been described, and maps have been drawn of the paths of the centromeres and arms of the chromosomes. The second period of metaphase is metaphase proper, during which links are established between the chromosomal threads of the spindle and the centromeres, the chromosomes separating into chromatids. Metaphase lasts from 0.3 to 175 min in different cells. In meiosis the analogous stage of the first division is called metaphase I. metaphase
metaphase [met´ah-fāz] the second stage of cell division (mitosis or meiosis), in which the chromosomes, each consisting of two chromatids, are arranged in the equatorial plane of the spindle prior to separation.met·a·phase (met'ă-fās), The stage of mitosis or meiosis in which the chromosomes become aligned on the equatorial plate of the cell separating the centromeres. In mitosis and in the second meiotic division, the centromeres of each chromosome divide and the two daughter centromeres are directed toward opposite poles of the cell; in the first division of meiosis, the centromeres do not divide but the centromeres of each pair of homologous chromosomes become directed toward opposite poles. [meta- + G. phasis, an appearance] metaphase (mĕt′ə-fāz′)n. The stage of mitosis and meiosis, following prophase and preceding anaphase, during which the chromosomes are aligned along the metaphase plate.metaphase A stage in mitosis or meiosis during which the chromosomes align along the equatorial plate of the cell and kinetochores contact the microtubuli of the spindle apparatus. The chromosomes are most condensed and best studied by classic cytogenetics during metaphase.met·a·phase (met'ă-fāz) The stage of mitosis or meiosis in which the chromosomes become aligned on the equatorial plate of the cell separating the centromeres. In mitosis and in the second meiotic division, the centromeres of each chromosome divide, and the two daughter centromeres are directed toward opposite poles of the cell; in the first division of meiosis, the centromeres do not divide, but the centromeres of each pair of homologous chromosomes become directed toward opposite poles. [meta- + G. phasis, an appearance]metaphase Stage of MITOSIS or MEIOSIS during which the chromosomes are aligned around the equator of the cell and are visible on microscopy. The stage at which the banding pattern of the chromosomes is apparent. Fig. 220 Metaphase . Position of chromosomes in mitosis and meiosis. metaphase a stage of nuclear division in EUKARYOTE cells, occurring once in MITOSIS and twice in MEIOSIS. The main process involved is the organization of CHROMOSOMES at the equator of a spindle, forming a metaphase plate. Each chromosome is divided into two CHROMATIDS, joined at a CENTROMERE. The chromosomes are densely staining and highly condensed, properties which makes them suitable for the production of KARYOTYPES. The spindle MICROTUBULES become attached to an area of the centromere called the kinetochore, the precise arrangement of chromosomes appearing to be random (this has important genetic implications, see INDEPENDENT ASSORTMENT) and different in mitosis and meiosis (see Fig. 220 ). The metaphase plate in the second cycle of meiosis is at right angles to the equator in metaphase I.metaphase
Words related to metaphasenoun the second stage of meiosisRelated Words- meiosis
- miosis
- reduction division
- phase of cell division
noun the second stage of mitosisRelated Words- mitosis
- phase of cell division
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