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2011-01-07 21:36:14
2011-01-07 21:36:14

As soon as one sperm fertilizes the egg, the egg's boundary changes and no further sperm are allowed to enter.


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The fact that only one sperm can fertilize an egg. After the sperm enters the cytoplasm of the oocyte, the cortical reaction takes place, preventing other sperm from fertilizing the same egg

Viable sperm is sperm that is capable of fertilizing an egg and resulting in, when combined with a viable egg, offspring. Hope this helps!

No. You do not have feeling that far into your body. You cannot feel sperm fertilizing an egg. ************* Also, this does not occur in your stomach.

The result is a diploid cell. It is called a fertilized egg, or zygote.

it catches the sperm inside it and stops it from fertilizing the egg

because a "wall" is put up when the sperm meets the egg. This prevents another sperm from meeting the egg.

No, only a sperm cell fertilizing your egg cell can get you pregnant.

it stops the sperm from reaching the egg.

It takes a few minutes for a sperm cell to penetrate the wall of the egg (and when it does so a reaction in the wall prevents other sperm from entering).

Spermicide's kill the sperm which prevents the fertilisation of the egg.

It prevents secondary fertilization by another sperm cell.

It can take up to 72 hours for the egg to be fertilized by the sperm, and/or for a fertilized egg to become implanted into the uterine wall. After 72 hours and an egg is not fertilized by the sperm, the sperm will die off, and the egg will continue its ovulation as it waits for another sperm to be successful in fertilizing it, or will finish ovulation and you will have your period.

after the sperm enters the egg the egg undergoes certain changes in its outer layers preventing any more sperm from entering

sperm competition. Since the dawn of the sexes, males have vied with each other to get as many of their own sperm near a fertile egg as possible. Getting more of your sperm closer to an egg means there is a greater probability that it will be you and not your neighbor fertilizing it.

It prevents fertilization by not letting the egg and sperm meet.

It can decrease the sperm count, hence reducing the chances of fertilizing an egg.

Ninja Bodyguards protect it!NO!!!! There are no such thing as ninja bodyguards, although there are guard cells in plant cells but that is not what I'm answering.Multiple fertilization normally doesn't happen because the fluids secreted by the vagina are acidic(means they have a low ph) and destroy most sperm.This all true but what really stops multiple sperm from fertilizing an egg is two things. One is at the tip of the sperm is a chemical that when it touches the outer layer of the egg it changes the polarity of the egg making it impossible for another sperm to fertilize. Also you can have multiple fertilization. It caused chiral people I think. Meaning people with patches of different genetic code in their bodies.

The 'lock-and-key' mechanism prevents fertilization of an egg by more than one sperm. This also ensures that an egg is only fertilized by sperm of the same species.

Sperm can live for up to 3 days inside you before fertilizing the egg. So no conception does not mean the day sperm fertilizes the egg. As far as I understand it, yes. Conception is the moment the two cells, [sperm and egg] join together and start creating new cells that go on to become a foetus.

The semen must enter the woman's body in order for a pregnancy to occur. Pregnancy is a result of a sperm fertilizing an egg.

They don't, except by in vitro (putting the egg in a petri dish and fertilizing it with male sperm), or just sex with a male.

Yes. There is a chance of sperm entering the vaginal canal and eventually fertilizing an egg.

It takes up to 3 days for the sperm to get to the egg in the fallopian tube and fertilize it. And then it takes another week for the egg to travel down to the uterus and attach itself to the wall. And it's the sperm fertilizing the egg to create a Zygote, not the other way around..

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