14. Despite the presence of So many sperms in the vicinity of an egg cell, only one sperm enters the ovum. Why?
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Answer:
because others get absorbed while travelling in the oviduct .Only one sperm cell carrying either x or y chromosome fuses with the egg.it is so because when the egg fuses with sperm it regains the diploid no. of. chromosomes
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Despite the presence of So many sperms in the vicinity of an egg cell, only one sperm enters the ovum because of change in the embryo after fertilization
Explanation:
- After the entry of the male sperm nucleus inside the egg, there is thickening of the zona pellucida of the ovum and as a result of this only one sperm can enter the cell.
- All the other sperms cannot enter the egg. All the other sperm either die in the vaginal tract or become immobile after some time..
- As a result of this only one sperm penetrates and the other sperms are killed inside the tract.
To know more about post fertilization events,
What are the. post fertilization events,?
https://brainly.in/question/3846840
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