MCQOPTIONS
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| 1. |
Which one of the following events immediately follows the entry of a spermatozoan into an oocyte |
| A. | An increase in the permeability of the oocyte membrane |
| B. | An increase in activity of proteolytic enzymes |
| C. | A decrease in the metabolic rate of the oocyte |
| D. | Thickening of the vitelline membrane |
| Answer» E. | |