Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 4

Cytokinesis. Predict what will happen in each of the following situations, based on your knowledge of cytokinesis. In each case, explain your answer.
(a)A fertilized sea urchin egg is injected with C3 transferase, a bacterial toxin that ADP ribosylates and inhibits Rho, 30 minutes prior to first cleavage.
(b)A one-celled C. elegans zygote lacks anillin, a protein that is required to assemble myosin efficiently at the cell surface.