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Why Sex?
Science Magazine ^
| 2/17/06
| Rasmus Nielsen
Posted on 02/22/2006 4:25:27 PM PST by furball4paws
It is assumed that most organisms have sex because the resulting genetic recombination allows Darwinian selection to work better. It is now shown that in water fleas, recombination does lead to fewer deleterious mutations.
(Excerpt) Read more at sciencemag.org ...
TOPICS: News/Current Events
KEYWORDS: crevo; crevolist; daphnia; evolution; recombination; sex
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Here's a question that's been discussed here before. This work with the water flea, Daphnia that one reason for the development of sex is that recombination leads to fewer deleterious mutations. Science requires membership, but I'll be glad to dig through the paper for answers for serious questions.
To: furball4paws
Something to do when free republic is down for repairs ?
2
posted on
02/22/2006 4:26:19 PM PST
by
al baby
(Father of the Beeber)
To: furball4paws
I'm holding out for asexual budding.
3
posted on
02/22/2006 4:27:12 PM PST
by
tet68
( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
To: furball4paws
4
posted on
02/22/2006 4:27:34 PM PST
by
IncPen
(Torture should be safe, legal, and rare.)
To: furball4paws
To: al baby
Yeah.
And because what's second best isn't even close.
6
posted on
02/22/2006 4:28:29 PM PST
by
Savage Beast
(9/11 was never repeated--thanks to President Bush and his surveillance program.)
To: furball4paws
I would think artificial insemination is a little tough for water fleas.
To: furball4paws
Procreation disguised as debilitating passion and awkward want....at least that's how it looks now from almost 50.
And fidelity is not man's natural state.....one of God's inside jokes..lol
8
posted on
02/22/2006 4:29:28 PM PST
by
wardaddy
(I want to be king ........tribute, neat robes ...and best of all Prima Noctra.......I'm down wid it!)
To: furball4paws
It's better some organisms don't breed...
9
posted on
02/22/2006 4:29:34 PM PST
by
digger48
To: furball4paws; PatrickHenry
Only on FR can we show live sex (sort of).
Might be a little more civil than some of the recent political stuff.
To: furball4paws
"It is assumed that most organisms have sex because the resulting genetic recombination allows Darwinian selection to work better."
Oh, so that's why I have sex ... because I want Darwinian selection to work better. /s
To: furball4paws
Why Sex? Because it's fun?
12
posted on
02/22/2006 4:31:21 PM PST
by
My2Cents
("The essence of American journalism is vulgarity divested of truth." -- Winston Churchill)
To: IncPen
I've always had a soft spot for Thurber.
To: Savage Beast
You mean "third or further down best?" A good snifter of an old (50-70 years or better) cognac, with a lemon slice on the side, surpasses it greatly.
14
posted on
02/22/2006 4:32:24 PM PST
by
GSlob
To: Dashing Dasher; najida
To: furball4paws
Q: "Why Sex?"
A: Why not?
A: Because celibacy is not hereditary?
A: [ insert own smart@**ed reply here ]
:-)
16
posted on
02/22/2006 4:37:36 PM PST
by
Pablo64
("Everything I say is fully substantiated by my own opinion.")
To: furball4paws
The crux of the experiments (S. Paland, M. Lynch Science 311:990) "is that selected mutations tend to interfere with each other in the absence of recombination. Imagine a beneficial mutation A arising in one individual and another beneficial mutation B arising in another individual that does not carry A. In the absence of recombination, mutation B would be eliminated when A reaches a frequency of 100%"
Daphnia is ideal for these studies because they be propagated both sexually and parthenogenetically.
To: RegulatorCountry
That might work as a pickup line, if the woman were drunk enough. I guess the man would have to be pretty inebriated as well to try it.
To: furball4paws
And how much did this study cost the taxpayers??????
To: furball4paws
"they be propagated both sexually and parthenogenetically"
Evobonics?
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