Which stages of cell division do the following figures A and B represent, respectively?
Late Anaphase and Prophase
Figure A represents late anaphase. During anaphase, the sister chromatids of each chromosome separate and begin moving to opposite ends (poles) of the cell.
Figure B represents prophase; centrioles move to the opposite sides of the nucleus. Chromosomes start to thicken and shorten.
Metaphase is the second stage of cell division, between prophase and anaphase, during which the chromosomes align at the equatorial plate and become attached to the spindle fibres.
Telophase is the final phase of cell division, between anaphase and interphase, in which the spindle fibres disappear and the chromatids or chromosomes move to opposite ends of the cell and two nuclei are formed.