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.
Tangential section of a spindle in metaphase, showing the unsymmetrical pair and one symmetrical pair.
In the metaphase (fig. 182) it is the last to come into the equatorial plate, possibly because of its lack of symmetry.
Figure 260 shows a side view of the second spindle in metaphase, and figure 261 in anaphase.
Figure 183 shows a small tangential section of a spindle in metaphase, containing the unequal pair and one equal pair.
Figures 50 and 51 show polar views of the metaphase, the smaller element (x) being the unequal pair.
The second maturation division is seen in metaphase in figure 220 and in anaphase in figure 221.
Diploid (2n) chromosome numbers were determined from cells in late prophase and metaphase of mitosis.
First maturation spindle in metaphase, chromosomes in single and double diamond shapes.
metaphase met·a·phase (mět'ə-fāz')
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.