How does the ovum ensure that only one sperm fertilises it?
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That prevents other sperm from adhering to the egg cell membrane. Polyspermy is the penetration of an egg by more than one sperm (which occasionally happens). ... Outside the egg, this secretion swells with water, pushes the other sperm away, and then forms a fertilization membrane around the egg.
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That prevents other sperm from adhering to the egg cell membrane. Polyspermy is the penetration of an egg by more than one sperm (which occasionally happens). ... Outside the egg, this secretion swells with water, pushes the other sperm away, and then forms a fertilization membrane around theegg.
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