Figure 18-9. The course of mitosis in a plant cell.

Figure 18-9The course of mitosis in a plant cell

These light micrographs of a living Haemanthus (lily) cell were taken at the times indicated, using differential-interference-contrast microscopy. The cell has unusually large chromosomes that are easy to see. (A) At prophase, the chromosomes condense and are clearly visible in the cell nucleus. (B and C) At prometaphase, the nuclear envelope breaks down and the chromosomes interact with the microtubules that emanate from the two spindle poles. Plants do not have centrosomes, but their spindle poles contain proteins related to those found in the centrosomal matrix of animal cells. (D) At metaphase, the chromosomes line up at the equator of the spindle. (E) At anaphase, the daughter chromosomes separate and start moving to opposite poles. (F) At telophase, the chromosomes decondense and daughter nuclei re-form (not seen). (G and H) During cytokinesis, a new cell wall (the cell plate, red arrows) forms between the two nuclei (N). (Courtesy of Andrew Bajer.)

From: An Overview of M Phase

Cover of Molecular Biology of the Cell
Molecular Biology of the Cell. 4th edition.
Alberts B, Johnson A, Lewis J, et al.
New York: Garland Science; 2002.
Copyright © 2002, Bruce Alberts, Alexander Johnson, Julian Lewis, Martin Raff, Keith Roberts, and Peter Walter; Copyright © 1983, 1989, 1994, Bruce Alberts, Dennis Bray, Julian Lewis, Martin Raff, Keith Roberts, and James D. Watson .

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