How is the entry of only one sperm and not many ensured into an ovum during fertilization in humans ?
Answers
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A sperm comes in contact with zona pellucida layer of the ovum and induces changes in the membrane to block the entry of additional sperm.
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The entry of multiple sperm is prevented by changes in zona pellucida of the ovum.
Explanation:
- The ovum consists of zona pellucida as one of the layers which stimulates the changes in ovum after the entry of the sperm nuclei inside it.
- The ovum wall gets thickened so that the sperms do not cross it.
- In addition to this chemicals are release which causes lysis or death of the other sperms.
- These changes occur as soon as the sperm nuclei enters.
To know more about post fertilization event,
What are post fertilization event,?
https://brainly.in/question/3846840
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