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steven johnson Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-02-09 08:22 PM
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Eggs Screen Sperm for DNA Quality: Scientists
Approximately 2 per cent of the male population are infertile for no discernable reason with normal sperm motility, counts and morphology. Here is a new scientific finding that explains this and the difficulty of cross species fertilization.


Some couples are unable to conceive because the woman's eggs screen his sperm for DNA quality and give it a thumbs down, the Independent reports. Scientists in Britain and the US have spotted this "lock-and-key" mechanism in which eggs "read" sperm's DNA, most of which is tightly packed inside. If tests are developed, this research could help couples understand their infertility and ensure the success of vitro fertilizations.

The research also shows that sperm does more than send DNA to the egg to be regulated and controlled by the mother's DNA. By revealing some DNA for an "open confirmation," the sperm plays a greater role in developing the embyro. "It contradicts the dogma that the egg does everything," one scientist says.

Eggs Screen Sperm for DNA Quality: Scientists

The secret life of sperm is unlocked
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valerief Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-02-09 08:25 PM
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1. How does a sperm have a secret life? Sperm on the down-low? nt
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DFW Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-02-09 08:27 PM
Response to Original message
2. If that were so, then I wouldn't be here
Unless my mom's egg was really desperate that day.........
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47of74 Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-02-09 08:30 PM
Response to Original message
3. That doesn't explain most Republicans.
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krispos42 Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-02-09 09:12 PM
Response to Reply #3
6. Damn, you beat me!
:rofl:
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DontTreadOnMe Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-02-09 08:38 PM
Response to Original message
4. wait a minute!
I thought God was in charge of everything... now you are telling me some science stuff and it is confusing me.

:)
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47of74 Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-02-09 09:37 PM
Response to Reply #4
7. Well God tells the egg whether or not to say
"Computer says no!" as well as "Computer says yes!" to incoming swimmers.
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merwin Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-02-09 11:48 PM
Response to Reply #7
8. My initial reaction to this story was "egg says noooo."
Sent my wife and I into a fit of laughter.

Glad to hear there are others having similar thouht trains.
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47of74 Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Aug-03-09 12:46 AM
Response to Reply #8
9. Are ye a fellow Stephanie Miller listener?
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merwin Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Aug-03-09 02:02 AM
Response to Reply #9
10. Whenever I can drag my ass out of bed
early enough to catch it. She is far too perky for that time of the morning.
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aquart Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-02-09 08:52 PM
Response to Original message
5. Heh. Heh. heh.
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BlooInBloo Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Aug-07-09 01:54 AM
Response to Original message
11. I thought that was what dating was for.
:P
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