Posted on 04/26/2016 10:06:18 PM PDT by aquila48
click the “conception” keyword; the second such topic was snuffed by the Mod just as I tried adding that keyword. ;’)
Need spectral analysis of the emitted light. Seriously.
Beautiful!
Bookmarked for WIDE dissemination!
Bmk
So the anti-creationists were sort of right all along: there really was a “big bang” that started it all. Bet they don’t bask in the glow of this little victory, lol.
John 1:4
Funny how in this particular case scientists will admit that human life begins at conception, yet deny it when it comes to the issue of terminating that life en vitro.
A bit of cognitive dissonance on the part of the radical left.
Have I missed a special day or something? Why do 90 % of the posts today have the word “flash” in them?
Never mind. I was still in search mode. Idiot.
Okay, people, don’t get so excited. Read the full article, it explains what is happening in the video.
The video was using a sperm protein, not an intact sperm, to cause the reaction. None of the eggs were actually fertilized. The light was caused by a release of zinc from the egg, which interacted with a fluorescent dye to create the flash of light. The egg itself did not light up, and eggs being fertilized do not emit a flash of light.
The fact is that fertilization is not some magical event. It is merely the fusion of two living cells. When the sperm fuses with the surface of the egg, it injects its DNA into the egg. The DNA then travels to the nucleus of the egg, and then is matched up with the DNA in the egg. Once the DNA is matched up, then the egg can start dividing and might grow into an embryo. This process is highly error-prone: most fertilized eggs do not grow, and even when they do undergo a few cell divisions, they do not become embryos. A large fraction of the eggs that do become embryos are incapable of developing very far, and die early (aka miscarry). Between the eggs that never become embryos and the third of embryos that die early on, the chance that a specific egg being fertilized will lead to the live birth of a baby is somewhere between 10% and 15%.
The chemical reaction that is being visualized in this video with a fluorescent dye actually changes the surface of the egg. Prior to fusing with a sperm, the egg has proteins on its surface that match proteins on the sperm surface (like a key and lock). Once the sperm protein fuses to an egg protein, the egg protein changes shape. That shape change causes a chain reaction across the surface of the egg. After that chain reaction, the egg surface proteins no longer match the sperm proteins.
It is possible for two (or more) sperm to fuse with the egg simultaneously. Eggs fused with more than one sperm will not develop any further.
I recall from 8th grade health class that the egg membrane locks down somehow as soon as a single one gets in.
;’)
And then they pick the good one, because it is brightest and murder the 7 others.
That’s what I recall, too.
Seems there is a VERY rapid changed in the egg’s cell wall once the sperm has entered.
That’s what I picked up on too.
In the experiment, scientists use sperm enzyme rather than actual sperm to show what happens at the moment of conception.
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