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To: blam
The shrinkage has been blamed for a surge in dental problems caused by crooked or overlapping teeth.

Stopped reading when I got to this second sentence.

The surge in dental problems is because the last 10,000 years our face has changed?

Why didn't our teeth adapt also???

39 posted on 11/20/2005 1:54:45 PM PST by Popman (In politics, ideas are more important than individuals.)
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To: Popman

The surge in dental problems is the proliferation of sugar in our diets now.
In ancient Rome when the citizens could afford some sweets, their teeth deteriorated over the lifetime of the individual, while the slaves who were never given expensive sugar died with broken down skeletons from hard labor, but their teeth were great.

That was not evolution either.

It's surprising how so many people think everything is "evolution." That's what modern scientific education does for us...... sheeesh!


46 posted on 11/20/2005 2:00:05 PM PST by ValerieUSA
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To: Popman
Stopped reading when I got to this second sentence.

Yeah, can't risk actually learning anything, eh?

The surge in dental problems is because the last 10,000 years our face has changed?

Yes.

Why didn't our teeth adapt also???

They are. As the article itself says, a genetic disposition for a lack of wisdom teeth is rising in the human population.

Nothing requires evolution to work in perfect synchronization when a change requires several components to change in order to achieve optimization. In fact, such perfect synchronization would be an argument *against* evolution.

All it requires is that stepwise changes be in the direction of increased net fitness, which the observations described in the article certainly seem to match. A shrinkage in jaws followed by a lagging adaptation of the teeth makes perfect sense biologically.

86 posted on 11/20/2005 2:47:18 PM PST by Ichneumon
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To: Popman
Why didn't our teeth adapt also???

Natural selection works on selecting those features adapted to enviomental pressure. Selection of smaller teeth will only kick in after the problem begins to affect the population.

325 posted on 11/21/2005 5:44:10 AM PST by Oztrich Boy (Paging Nehemiah Scudder:the Crazy Years are peaking. America is ready for you.)
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