Final answer:
Anaphase in the Whitefish Blastula appears as sister chromatids separating and moving to opposite poles under a high-power microscope. To determine the duration of anaphase in these cells, count the number of cells in anaphase, calculate the proportion of the total, and multiply by 24 hours.
Step-by-step explanation:
Anaphase is a distinct phase of mitosis where sister chromatids separate and move towards opposite poles of the cell. This stage is easily identifiable in Whitefish Blastula cells when viewed under a high-power microscope. A prepared microscope slide of whitefish blastula cross-sections will display cells at various stages of the cell cycle.
Using a microscope, after scanning and focusing on the cells with medium-power, you switch to the high-power objective to find cells that are in anaphase. The characteristic image you would look for is the chromatids being pulled towards the poles, appearing like two separate clusters connected by the spindle fibers, which would be stained and visible under high magnification.
To estimate the time cells spend in anaphase within the whitefish blastula, you would count the number of cells in anaphase, convert that to a percentage of the total cells, and then multiply by 24 hours. The results can be displayed in a table to show the estimated duration of each cell-cycle stage, illustrating the dynamic nature of cell division.