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polyspermy is a egg that was fertilized by multiple sperm. This is a major problem in most cells because due to this, there will be no sign of diploidy (2 set of chromosomes). The egg prevents this during the acrosomal process. The contact between the acrosome and the vitelline envelope triggers the egg to release Ca+ which changes the charge under the plasma membrane. This prevents other sperms from interacting. This is the first way that it is prevented. This way is often referred as the "Rapid Block"
For the "Slow Block", The cortical granules inside the egg (they're like these tiny vesicles just under the plasma membrane) fuse with the egg plasma membrane. this in turn triggers swelling of the space betweel the vitelline envelope and the plasma membrane. Afterwards, the vitelline envelope hardens.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoionic (acidic I believe) changes in the oocyte prevent additional penetration of sperm, aka syngamy
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One consequence of the acrosomal reaction is?
the fast block to polyspermy
Is meiosis constantly occurring?
Is meiosis constantly occurring?
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What is polyspermy in humans?
Polyspermy is when more than one sperm penetrate one egg during conception. Normally, there are blocks to polyspermy because humans are generally monospermic - only one sperm and one egg can create a viable zygote. Thus, there are biological blocks to polyspermy in humans.
Result of polyspermy in humans is?
Nonfunctional zygote
One consequence of the acrosomal reaction is?
the fast block to polyspermy
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