Wednesday, March 30, 2005

Postive News- Sex is good for you!

From evolution's standpoint, sexual reproduction seems to have many disadvantages over the asexual variety.


It wastes time and energy, it mixes up perfectly good genes, and females, who do nearly all of the reproduction work, get to pass on only half their genetic material. So scientists have wondered, why bother with sex?


But on the plus side, August Weismann, a 19th century theorist, proposed that sexual reproduction helps speed up natural selection by allowing good genes to spread more quickly through a population, and bad genes to disappear faster. That makes sex good for the species, and hence worth the effort.


Although generally accepted, Weismann's theory has been difficult to prove in the lab. But a team of British scientists has at last shown just what is so good about sex. In yeast, at least.


Yeast comprises tiny organisms that reproduce both ways -- sexually and asexually.


So Matthew Goddard and a team of scientists from Imperial College London made two different versions of otherwise identical yeast, one that could reproduce both ways and one that could only perform the asexual kind of reproduction.


They found that under normal conditions, both sorts of yeast fared just as well. But under extreme conditions, the sexy yeast did better.


"Our results indicate that sexual reproduction can provide a selective advantage during adaptation to new environments, and these data are consistent with Weismann's ideas," they wrote in the journal Nature. But there is still more to study.


"A challenge now is to understand the nature of the mutations that underlie adaptation, and to extend these techniques to larger plants and animals," they wrote.

5 Comments:

At 5:36 AM, Blogger tothemoon said...

I strongly disagree. Sex is not good for you, sex will send you to hell. I am a 53 year old nun and i have yet to be tempted by the devils fruit. I will say a prayer for you my son. Too bad you ended up such a bad seed with so many nuns in you family. Talking about sex on the internet, you should be ashamed of yourself.

 
At 9:53 AM, Blogger CreativeWonders said...

I commend you, Sister, on keeping true to your promise for so long. I have to point out that this article is purely about sex for proceation purposes only - which is how I have so many nuns as relatives in the first place. So it's really not so bad, non?

 
At 5:16 AM, Blogger nun57 said...

The devil got to me. I am a virgin no more. I met this young guy from Creston, big fella. He gave me such a beating i couldn't walk for days. But i have to say it was quite invigorating. So now I've left the monestary and bured my habit. So now my life is about two things; sex and pleasure. My new God is the male genetalia. And it's all thanks to you St.Michael. Thank you!

 
At 11:23 AM, Blogger CreativeWonders said...

Who are you, Ms. Nun, who is so wise in the ways of living?

 
At 4:40 AM, Blogger nun57 said...

I go by many names, but to you i'm nun57. I like to be anonymous and venomous, just like you.

 

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