- the stage in mitosis or meiosis in which the duplicated chromosomes line up along the equatorial plate of the spindle.
Origin of metaphase
Examples from the Web for metaphase
Historical Examples of metaphase
Diploid (2n) chromosome numbers were determined from cells in late prophase and metaphase of mitosis.
Haploid (n) chromosome numbers were determined from cells in diakinesis, metaphase I, and metaphase II of meiosis.
Figure 29 is the equatorial plate of a metaphase in which the larger component of the unequal pair has been removed in sectioning.
Figure 260 shows a side view of the second spindle in metaphase, and figure 261 in anaphase.
Figures 50 and 51 show polar views of the metaphase, the smaller element (x) being the unequal pair.
- The stage of mitosis and meiosis, following prophase and preceding anaphase, during which the chromosomes are aligned along the metaphase plate.
- The stage of cell division in which the duplicated chromosomes become aligned along the center of the cell, called the equatorial plate or metaphase plate. Metaphase lasts up to an hour, and ends in mitosis and the second division of meiosis when separation of the paired chromosomal strands (called chromatids) begins. In the first division of meiosis, the paired chromosomes separate from one another. Metaphase is preceded by prophase and followed by anaphase. See more at meiosis mitosis.