Not signed in (Sign In)

Vanilla 1.1.2 is a product of Lussumo. More Information: Documentation, Community Support.

  1.  

    This is very interesting in light of this discussion:

    Some women may see 100 million colors, thanks to their genes

    Wednesday, September 13, 2006

    By Mark Roth, Pittsburgh Post-Gazette

    Susan Hogan can't be sure, but it wouldn't surprise her if she turned out to be a tetrachromat.

    A tetrachromat is a woman who can see four distinct ranges of color, instead of the three that most of us live with.

    A genetic test would be needed to verify whether Mrs. Hogan truly fits that description, but it could help explain why the interior decorator can hold up three samples of beige wall paint, "and I can see gold in one and gray in another and green in another, but my clients can't tell the difference."

    It may be impossible for us trichromats to imagine what a four-color world would look like. But mathematics alone suggests the difference would be astounding, said Jay Neitz, a renowned color vision researcher at the Medical College of Wisconsin.

    Each of the three standard color-detecting cones in the retina -- blue, green and red -- can pick up about 100 different gradations of color, Dr. Neitz estimated. But the brain can combine those variations exponentially, he said, so that the average person can distinguish about 1 million different hues.

    A true tetrachromat has another type of cone in between the red and green -- somewhere in the orange range -- and its 100 shades theoretically would allow her to see 100 million different colors.

    That may be why Mrs. Hogan can look out the windows of her Mount Washington home and tell the relative depths and silting of the three rivers at the Point by discerning the subtle differences in their shades.

    "I have a very hard time even giving names to colors because I see so many other colors inside them," she said.

    Dr. Neitz, who conducts his research with his wife Maureen, said only women have the potential for super color vision.

    That's because the genes for the pigments in green and red cones lie on the X chromosome, and only women have two X chromosomes, creating the opportunity for one type of red cone to be activated on one X chromosome and the other type of red cone on the other one. In a few cases, women may have two distinct green cones on either X chromosome.

    But it's unlikely, Dr. Neitz said, that all of the women with four types of color cones will have the potential for superior color vision, because for many, their two red cones will be so close to each other in the wavelengths they detect that they won't see things much differently than a three-color person does.

    He estimated that 2 percent to 3 percent of the world's women may have the kind of fourth cone that lies smack between the standard red and green cones, which could give them a colossal range.

    ...

    •  
      CommentAuthorUdoboy
    • CommentTimeMar 24th 2007
     

    You know, this explains something...

    A guy in Spain, long ago, was able to predict when ships would be coming, even though they were beyond the horizon. But if he could see color variations of the air at the edge of the horizon, he could read disturbances and determine that a ship was coming.

  2.  

    but only women have the potential to have four cones

    •  
      CommentAuthorFact totum
    • CommentTimeMar 24th 2007
     
    Posted By: Udoboy

    he could see color variations of the air at the edge of the horizon, he could read disturbances and determine that a ship was coming.

    Seems pretty far-fetched. As I recall, the horizon is about 3 miles away if one is at sea level. That's pretty far away to be noticing a change in the air.

    •  
      CommentAuthorcmseagle
    • CommentTimeMar 24th 2007
     
    Posted By: estebanissexy

    but only women have the potential to have four cones

    HEY! Did you read that in a google gadget?

  3.  

    no, I read it in legat's post...

    •  
      CommentAuthorcmseagle
    • CommentTimeMar 24th 2007
     

    It's not my fault i didn't read it...

    •  
      CommentAuthorUdoboy
    • CommentTimeMar 25th 2007 edited
     
    Posted By: estebanissexy

    but only women have the potential to have four cones

    or an XXY male....

    People tend to make regular explanations simple. But triple-chromosome people aren't as rare as one might think.

    •  
      CommentAuthorTrance
    • CommentTimeMar 25th 2007
     

    But they'd have down's syndrome, right?

    •  
      CommentAuthorUdoboy
    • CommentTimeMar 25th 2007
     
    Posted By: Trance

    But they'd have down's syndrome, right?

    Um, not necessarily.

    •  
      CommentAuthorTrance
    • CommentTimeMar 25th 2007
     

    I thought people with an extra chromosone had down's syndrome...

  4.  

    Not necessarily. Those people with XXY have 47, XXY Syndrome. Those people may get downs syndrome

    •  
      CommentAuthorTrance
    • CommentTimeMar 25th 2007
     

    Oh, I see, I get it.

    I think my biology teacher meant that all down's sundrome sufferers have 47 chromosones, not vice versa.

    •  
      CommentAuthorFact totum
    • CommentTimeMar 26th 2007 edited
     

    Here's another place you can try to find it...

    color site

    •  
      CommentAuthorFact totum
    • CommentTimeMar 26th 2007 edited
     

    Hmmm -- did that work? Why did I not need the final "left-bracket slash-url right-bracket"?

    •  
      CommentAuthorUdoboy
    • CommentTimeMar 26th 2007 edited
     

    I dunno... let's try it.

    Return

    Hm.. that's not what I typed. the Return at the beginning is where the open URL tag is. weird.

  5.  

    Udo: I edited your post... that's the proper format for linking text

  6.  

    Dictionary.com's word of the day today is 'veritable'. One of the examples they quote is:

    One historian described the Glendale Narrows as a "veritable jungle of cactus . . . and other growth that early pioneers had never dared to travel through, even on horseback."
    -- Blake Gumprecht, The Los Angeles River

    Veracity and Glendale neatly tied together - with the aforementioned green relationship.

    •  
      CommentAuthorUdoboy
    • CommentTimeMay 19th 2007
     

    And what has that to do with Gendale?

    :old-owned:

  7.  

    I ought to get the L out of here, I guess.

    •  
      CommentAuthorTrance
    • CommentTimeMay 19th 2007
     

    Confusing Glendale with gendale methinks, I didn't want to say anything earlier.

    •  
      CommentAuthorcritdragon
    • CommentTimeMay 19th 2007
     

    would these women then be more likely to see gendale??

  8.  

    well, taking into account that they are women, Id have to say yes

    •  
      CommentAuthorcmseagle
    • CommentTimeMay 23rd 2007
     

    Has this thread seriously been re-resurrected? It was on the front page when i first joined.

  9.  

    Same goes for me - you beat me by a day.

  10.  

    this was always my favorite CS thread.

    •  
      CommentAuthorTrance
    • CommentTimeMay 24th 2007
     

    This one's always been around on the first few pages, it was the first thread I read when I joined.

    •  
      CommentAuthorcritdragon
    • CommentTimeMay 24th 2007
     

    my favourite CS thread was the religious one, but this was one of the first threads i read when i joined aswell

    •  
      CommentAuthornyarfdude
    • CommentTimeMay 28th 2007
     

    Speaking of which, whatever happened to the Religious Thread?!

    •  
      CommentAuthorUdoboy
    • CommentTimeMay 28th 2007
     

    It went to hell.

    •  
      CommentAuthorPriya
    • CommentTimeMay 29th 2007 edited
     

    That made me LOL.

  11.  
    Posted By: Udoboy

    It went to hell.

    And back?

    •  
      CommentAuthorAthene
    • CommentTimeMay 29th 2007
     

    No, in a handbasket.

    •  
      CommentAuthorcritdragon
    • CommentTimeMay 29th 2007
     

    maybe it's just on the highway to hell..

    •  
      CommentAuthorUdoboy
    • CommentTimeMay 29th 2007
     

    Hell's Bells... can't you people stay on topic [interrobang]

    • CommentAuthorjosh13
    • CommentTimeJul 11th 2007
     
    Posted By: Udoboy
    Posted By: estebanissexy

    but only women have the potential to have four cones

    or an XXY male....

    People tend to make regular explanations simple. But triple-chromosome people aren't as rare as one might think.

    I suppose that theoretically, that would be possible but the odds would be miniscule. In addition, just to clear up any confusion a person with XXY does not have Down syndrome. Humans have 46 chromosomes, but to be more correct 23 homologous pairs. Homologous meaning that they are matching (same genes in the same loci but different alleles [characteristics or traits). Anyway, Downs Syndrome is caused by trisomy 21 (3 copies of the 21 pair of chromosomes). However, person with XXY has Klinefelter's Syndrome. They are technically considered males, if you do some research you will see it has some very peculiar affects, be sure to search on Google Images.

    Therefore, 47 chromosomes doesn't necessarily result in Down Syndrome (although that is one of the most common ones). It depends on which chromosome the mutation is. And just out of interest, the autosomes (non sex chromosomes) get smaller as the numbers increase, ie 1 is the largest and 22 the smallest. There will never be a baby born with trisomy 1 or 2 because these contain so much genetic information that the corruption of it would be too detrimental.

    If your going to do some research on Klinefelters you might like to look up Turner’s Syndrome as well... Similar case but there is one sex chromosome which is an X.

    •  
      CommentAuthorTrance
    • CommentTimeJul 12th 2007
     

    And that's what Gendale looks like.

    •  
      CommentAuthorYika
    • CommentTimeJul 12th 2007
     

    Hoorah.

  12.  

    Or maybe Genderale

    •  
      CommentAuthorFact totum
    • CommentTimeJul 13th 2007
     

    or Gingerale?

    •  
      CommentAuthornyarfdude
    • CommentTimeJul 13th 2007
     

    I love gingerale!

    •  
      CommentAuthorAthene
    • CommentTimeJul 13th 2007
     

    Is that like MaryAnnale?

    •  
      CommentAuthornyarfdude
    • CommentTimeJul 13th 2007
     

    Funny... :rolleyes:

    (Just kidding, Athene. It was kind of funny.)

    •  
      CommentAuthormargaret
    • CommentTimeJul 13th 2007
     

    My personal favorite was always TheProfessorale...:heartbounce:

    Actually, I was told not too long ago that Russell Johnson's true eye color is gendale, but of course this wasn't captured on Gillgan's as gendale is unable to be captured by film. His former castmates say gendale's magical hues are what give him his aura of charisma and confidence.

    •  
      CommentAuthorYika
    • CommentTimeJul 16th 2007
     

    Nice new avatar Nyarf!!

    •  
      CommentAuthornyarfdude
    • CommentTimeJul 17th 2007 edited
     

    Thank you...(But why in this thread?)

  13.  

    where else!

    •  
      CommentAuthorYika
    • CommentTimeJul 18th 2007
     
    Posted By: nyarfdude

    Thank you...(But why in this thread?)

    (Does that matter in any thread?)

    •  
      CommentAuthorUdoboy
    • CommentTimeJul 18th 2007
     

    Because the mouse's ears are gendale, duh.

    •  
      CommentAuthorAthene
    • CommentTimeJul 18th 2007
     

    Be nice, Udo. Remember, not everyone can see gendale, thus, can't be expected to see the connection.