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Unformatted text preview: them in good detail) MULTIPLE CHOICE (5 pts each)there is ONE answer for each question 6. The slow block to polyspermy is caused by: a. Depolarization of the egg plasma membrane b. The release of cortical granules from the newly fertilized egg c. Release of the acrosomal contents by the sperm d. degradation of cytostatic factor e. the introduction of the sperm centrosome into the egg 8. The following event is triggered by a rise in intracellular free calcium: a. genomic imprinting b. the fast block to polyspermy c. the cortical reaction d. stabilization of cytostatic factor e. all of the above 1 Your name:____________________________________ 10 (b) ( 6 pts ) In the outline of the fertilized Drosophila egg below, shade in the distribution of the Bicoid mRNA . Should be restricted domain to the anteriorno gradient 2 embryos from Toll mutant mothers bg ral D V A P...
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- Fall '10