Author: SMITHI

The oldest hookers in town: The 69-year-old twin sisters --Daily Mail   [Copy link] 中文

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Post time 2012-11-14 23:19:30 |Display all floors
expatter Post time: 2012-11-14 21:19
Now that is just plain idiotic nonsense .........

In natural selection the biggest ugliest mur ...

Well obviously I have seen more nature documentaries than you.

That's not how it works.  Females in almost all species control when sex happens.  Its the males that go through all kinds of displays and shows to attract a female.

Even the most violent predator species, females still have control.  It may look like they are just 'taking' it - but not so, say the scientists.
  
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Post time 2012-11-14 23:30:05 |Display all floors
Hyeah roight  ............   !   

Guffaw, guffaw  ..........     
   

Maybe with the odd case like a preying mantis or even some bird species who do mating dances, but in most species the bulls/males fight each other and the females look passively on ........


The females are then mounted by the winner no matter how ugly (the female is)      .........

Now that is natural selection  ..........     





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Post time 2012-11-15 02:38:24 |Display all floors
expatter Post time: 2012-11-14 23:30
Hyeah roight  ............   !   

Guffaw, guffaw  ..........     

I used to think the same way until I saw a couple documentaries that set me straight on this.

Even the males fighting over each other - they are fighting for the 'privilege' to mate.  This ensures the strongest genes are passed down.  There are males that never get to mate at all, whereas you say, for females its a whole different matter.

Darwin first suggested that females were the ones who 'chose' the male.

This is from an article in national geographic.  I'll send you the link if you want to read it all, it's quite lengthy, but very interesting.

But the part of the theory suggesting that females choose mates—thus shaping male physiology and behavior and influencing a species' evolution—was immediately attacked from all sides. Another proponent of the theory of evolution, Alfred Russel Wallace, particularly despised the notion and actively lobbied against it. He argued that males were brightly colored and given to song because of their "superabundant energy" during the mating season. For Wallace, natural selection covered everything, including male competition. And he found the idea that females choose mates because they prefer a particular color or ornament ludicrous because it suggested a faculty for taste and discrimination that he believed to be beyond most animals. Throughout most of the 20th century Wallace's opinion prevailed, and Darwin's theory of sexual selection, with its offshoot of female choice, was largely ignored.

"Right into the 1970s people were still laughing at the idea of female choice," says Michael Ryan, an evolutionary biologist at the University of Texas in Austin. "One writer even said that all you had to do was look at our own species to see that females had no input whatsoever in mating decisions. Now, of course, we have tons of examples that show that Darwin was right: It's most often the females that choose."

Indeed, these days scientific journals are packed with papers on sexual selection and mate choice. In their search to understand how and what females choose, scientists have uncovered an entirely new world of the startling and steamy: Fruit flies that (for their tiny body size) produce some of the largest sperm in the animal kingdom; male millipedes with special legs that exist solely to rhythmically massage a female's reproductive tract, apparently a stimulation she needs before allowing him to inseminate her; a protein in a male mouse's saliva that tells a female mouse if he's Mr. Right.

  
Behold the turtle. He makes progress only when he sticks his neck out.

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Post time 2012-11-15 02:46:15 |Display all floors
expatter Post time: 2012-11-14 23:30
Hyeah roight  ............   !   

Guffaw, guffaw  ..........     

More....an excerpt from an article called 'Mate Selection - Evolutionary Factors'

========================================================

Taking a still broader perspective, we can ask, "How does mate selection in humans compare with mate selection in other animals?" Looking across many animal species, evolutionary biologists have uncovered general principles that may help clarify some of the particulars of human mate selection.

At the broadest level, the theory of inclusive fitness suggests all animals are selected to behave in ways that, on average, benefit others sharing their genes (siblings and cousins as well as their own offspring). Sexual selection refers to a form of natural selection favoring characteristics that assist in attracting mates (e.g., peacock's feathers) or in competing with the same sex (e.g., rams' horns). Across species, females are more likely to be the selectors, and males are more likely to be found banging their heads against one another to win females' attention. According to differential parental investment theory, the sex with the initially higher investment in the offspring—generally the female—has more to lose from a poor mating choice and therefore demands more before agreeing to mate (Trivers 1972). In species in which males make the larger investment (e.g., by caring for the eggs and young, as in seahorses), males tend to be more selective about their mates (Daly and Wilson 1983). In mammals, the normal discrepancy between males and females is especially pronounced, because females carry the young inside their bodies and nurse them after birth. Male mammals can reproduce with little cost, and, frequently, the male's direct input does not go beyond the simple act of copulation. In such species, males tend to be nonselective about their mates, whereas females demand evidence of superior genetic potential before mating and will often mate only with males who have demonstrated superior capabilities. Humans also sometimes have sexual relations within less committed relationships, in the typical mammalian mode. Under those circumstances, males are less selective (Kenrick et al. 1990). Unlike most mammals, however, humans tend to form long-term pair-bonds, in which males invest many resources in the offspring. Under those circumstances, men's selectivity about mates approaches that of women (Kenrick et al. 1990).

  
Behold the turtle. He makes progress only when he sticks his neck out.

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Post time 2012-11-15 03:10:07 |Display all floors
This post was edited by expatter at 2012-11-15 03:22
JFenix Post time: 2012-11-15 02:46
More....an excerpt from an article called 'Mate Selection - Evolutionary Factors'

=============== ...

Um  ..........  !

I think I already stated that .........

Some species such as birds and maybe even some insects and reptiles have devolved a system where the male has to attract the female by colouration or even movement as in physical dance  ...........

But in the main for mammals (humans are mammals) the female is a prize of the strongest male  .........

And thank you for the effort in proving me correct  ..........

It is truly appreciated  ............     


For example ..........

Rams butting their heads against each other (as cited) are not chosen by a female but rather nature where the strongest 'head-butter' gets the compliant females and therefore the female is subordinate in this process  ............  

NEXT  ...........   !!!!


What the world needs is more geniuses with humility, there are so few of us left  -   Oscar Levant

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Post time 2012-11-15 03:52:03 |Display all floors
expatter Post time: 2012-11-15 03:10
Um  ..........  !

I think I already stated that .........

That's actually not the way it works.  I thought the same as you for many years.

Even after the often violent encounters of male dominance, there is still female courtship and the females can reject the male.

Its fascinating stuff.  I love evolutionary science.  Just when you think you know everything there is another discovery proving you wrong.
  
Behold the turtle. He makes progress only when he sticks his neck out.

                          -  James Bryant Conant

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Post time 2012-11-15 03:53:36 |Display all floors
This post was edited by SMITHI at 2012-11-15 04:04
expatter Post time: 2012-11-14 13:16
Smithi makes a good point ........

Either women are covered up and the death penalty introduced f ...


thanks expatter

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