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New Insight into How Eyes Form in Embryos
livescience ^ | 30 August 2006 | By Andrea Thompson

Posted on 08/30/2006 2:56:10 PM PDT by flevit

Like tiny automatons, the cells that form a fish embryo's eyes are chemically programmed to individually amass at the site where the eyes will develop, according to a new study that contradicts traditional views of how organs develop before birth.

The study was done only on fish eyes and might or might not apply to humans.

"We think organs might be forming by the individual movement of cells," says Martina Rembold, of the European Molecular Biology Laboratory and the study's lead author.

Scientists previously thought that the eyes formed as cells at the sides of the tube-like structure that eventually forms the embryo's head and brain collectively bulged out—like blowing up the ears of a Mickey Mouse balloon, Rembold said. But she and her colleagues learned that the cells actually independently travel from the center of the tube out to the site of eye formation.

(Excerpt) Read more at livescience.com ...


TOPICS: News/Current Events
KEYWORDS: bevisbuttheaddoid; evolution; eyes; eyesight; justrandomprocesses; stemcells
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To: nmh
Your limited thinking doesn't compare with the genius of God.

Of course not. Most people's limited thinking doesn't even compare with the genius of science.

41 posted on 08/30/2006 4:22:13 PM PDT by Quark2005 ("Do not give dogs what is sacred; do not throw your pearls to pigs." -Matthew 7:6)
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To: nmh
He is the Alpha and the Omega.

and the Oregano and Parmesan.


42 posted on 08/30/2006 4:23:47 PM PDT by dread78645 (Evolution. A doomed theory since 1859.)
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To: flevit
How about studying it on something closer, e.g. monkeys.
43 posted on 08/30/2006 4:25:44 PM PDT by The Red Zone
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To: dread78645

My God's people can eat your god up.


44 posted on 08/30/2006 4:26:28 PM PDT by The Red Zone
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To: PatrickHenry
Yet again, a science article with a title like "New Insight into [in this case] How Eyes Form in Embryos" comes out and on FR we have a festival of Luddite snotheads cackling that science won't admit it's all magic.
45 posted on 08/30/2006 4:35:07 PM PDT by VadeRetro (Liberalism is a cancer on society. Creationism is a cancer on conservatism.)
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To: js1138

Watches are complicated configurations of matter. They don't assemble themselves. They are assembled by a person.

The human body and the universe around us are complicated configurations of matter -- more complicated than any watch. They don't/did not assemble themselves. They are/were assembled by a Person.

1. For every work of art there exists an artist who created it.

2. The universe is a work of art.

3. Therefore, there exists an Artist who created it.


46 posted on 08/30/2006 4:37:59 PM PDT by B-Chan (Catholic. Monarchist. Texan. Any questions?)
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To: Elpasser
The dirty little secret is that evolution is nothing more than evangelical religion.

...at which you evidently sneer.

47 posted on 08/30/2006 4:38:21 PM PDT by Erasmus (It takes branes to make an alternate universe!)
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To: VadeRetro

Well the title doesn't say "Fish Embryos." Thus it comes off sounding like a rather (if I may say so) UNSCIENTIFIC generalization.


48 posted on 08/30/2006 4:42:03 PM PDT by The Red Zone
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To: B-Chan

Please prove assertion #2.


49 posted on 08/30/2006 4:42:06 PM PDT by Erasmus (It takes branes to make an alternate universe!)
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To: Erasmus

Please prove you aren't less art than a toad.


50 posted on 08/30/2006 4:43:37 PM PDT by The Red Zone
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To: js1138
This appeared on Science News ten days ago:

Source: University of California - Riverside
Date: August 19, 2006

Molecules Spontaneously Form Honeycomb Network Featuring Pores Of Unprecedented Size

UC Riverside researchers have discovered a new way in which nature creates complex patterns: the assembly of molecules with no guidance from an outside source. Potential applications of the finding are paints, lubricants, medical implants, and processes where surface-patterning at the scale of molecules is desired.

Spreading anthraquinone, a common and inexpensive chemical, on to a flat copper surface, Greg Pawin, a chemistry graduate student working in the laboratory of Ludwig Bartels, associate professor of chemistry, observed the spontaneous formation of a two-dimensional honeycomb network comprised of anthraquinone molecules.

The finding, reported in the Aug. 18 issue of Science, describes a new mechanism by which complex patterns are generated at the nanoscale – 0.1 to 100 nanometers in size, a nanometer being a billionth of a meter – without any need for expensive processes such as lithography.

"We know that some of the most striking phenomena in nature, like the colors on a butterfly wing, come about by the regular arrangement of atoms and molecules," said Pawin, the first author of the paper. "But what physical and chemical processes guide their arrangement? Anthraquinone showed us how such patterns can form easily and spontaneously."

Over a span of several years, Bartels’s research group tested a multitude of molecules for pattern formation at the nanoscale. The group found that, generally, these molecules tended to become lumps, forming uninteresting islands of molecules lying side by side.

Anthraquinone molecules, however, form chains that weave themselves into a sheet of hexagons on the copper surface, forming a network similar to chicken wire. The precise shape of the network is governed by a delicate balance between forces of attraction and repulsion operating on the molecules.

51 posted on 08/30/2006 4:45:54 PM PDT by forsnax5 (The greatest problem in communication is the illusion that it has taken place.)
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To: flevit

There is no question that the eyes form out of tissue that is already there. The question is whether the existing tissue is brain stuff or skin stuff or a lining between the two. This proposal is that the eyes form out of a combination, which seems likely since the eyes have both a direct connection to the brain and are structurally a connective tissue with cysts.


52 posted on 08/30/2006 4:49:24 PM PDT by RightWhale (Repeal the law of the excluded middle)
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To: B-Chan
1. Human brains have evolved to be excellent at pattern recognition.

2. Some natural processes are not fully understood by humans.

3. Human brains, faced these phenomenon, 'filled in the gaps' with magic.

53 posted on 08/30/2006 4:52:17 PM PDT by Wormwood (Iä! Iä! Cthulhu fhtagn!)
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To: flevit
I didn't see anything that was comparable to the eye, or self-replicating hexagonal wax-structure building things caused by algorithms,

Ah, yes. Although I suspect that honeycombs are more comparable to crystals, with their regular shapes, than to a swarm like these proto-eye cells in the article. But the general point is the same: Complex patterns developing from relatively simple rules.

or are you suggesting that it took NO-intelligence to develop the "boids" computer models

The point is that complexity can arise out of simplicity. Organic chemicals have a high propensity to stick together in interesting ways, which are basically governed by relatively few chemical bonding rules.

The question is, is there enough complexity built in to organic chemistry's rules to generate the kind of dynamically organized - yet complex - systems that make up living organisms? I think it's intuitively obvious that there is, and so there's no compelling reason to postulate an extra intelligence that has to keep tweaking it to get it all to work.

54 posted on 08/30/2006 4:58:01 PM PDT by jennyp (WHAT I'M READING NOW: your mind)
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To: B-Chan

"1. For every work of art there exists an artist who created it.

2. The universe is a work of art.

3. Therefore, there exists an Artist who created it."

One man's art is another man's pornography.


55 posted on 08/30/2006 5:04:10 PM PDT by furball4paws (Awful Offal)
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To: jennyp
complexity can arise out of simplicity

A little stronger: complexity is inevitable no matter how simple the start.

56 posted on 08/30/2006 5:05:05 PM PDT by RightWhale (Repeal the law of the excluded middle)
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To: jennyp

if its so "simple" an intelligent woman as yoursef surely could out create a complete lack of intelligence.

yes, funny these claims of "simple" yet the collective human intelligence, can come up with anything close yet.


57 posted on 08/30/2006 5:07:45 PM PDT by flevit
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To: flevit

can't


58 posted on 08/30/2006 5:08:43 PM PDT by flevit
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To: B-Chan

Rev Paley came up with many analogies besides the Watchmaker. But, proof by analogy doesn't fly anymore; might as well go straight to revelation. But, the Text is the word of revelation, and funny thing is it doesn't support some real basic dogma such as that the universe was created out of nothing. Not even 2 Eccl 7.28, if you have that book in your bound copy.


59 posted on 08/30/2006 5:10:07 PM PDT by RightWhale (Repeal the law of the excluded middle)
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To: forsnax5
observed the spontaneous formation of a two-dimensional honeycomb network comprised of anthraquinone molecules.

I say it isn't spontaneous BUT laws of phyiscs--chemistry--and coupled with the environment and if they were known before hand the pattern and colors could have been predicted
60 posted on 08/30/2006 5:16:17 PM PDT by uncbob
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