[2012-Jul-19] Polydactyly

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[2012-Jul-19] Polydactyly

Postby ChaoticBrain » Thu Jul 19, 2012 3:25 pm

http://www.smbc-comics.com/index.php?db=comics&id=2677#comic

The Amish have an increased chance of being born with extra fingers?

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Re: [2012-July-19] Polydactyly

Postby Sentient AI » Thu Jul 19, 2012 4:39 pm

I'm not sure if the Amish keep families between the communities, and whether those communities are large enough to be genetically diverse enough to prevent inbreeding.
Just a bit of speculation for that.
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Re: [2012-July-19] Polydactyly

Postby sploder » Thu Jul 19, 2012 5:08 pm

Its called the Founder effect. The o=founders of Amish communities had a higher than average genetic makeup favoring polydactyly, and if i recall correctly dwarfism in certain communities. due to the isolation of these communities, the prevalence remains or expands.
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Re: [2012-July-19] Polydactyly

Postby Sentient AI » Thu Jul 19, 2012 9:41 pm

Ah, that makes sense.
And neckbeards.
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Re: [2012-July-19] Polydactyly

Postby Lethal Interjection » Fri Jul 20, 2012 1:51 am

This was an interesting fact I did not know about.
So I did some wiki-ing on the topic.
There are some interesting versions of the founder effect.
Such as the deaf percentage of Martha's Vineyard.
Or one that I knew of (though I wouldn't have thought about it as founder effect): Ty-Sachs in Ashkenazi Jews.
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Re: [2012-July-19] Polydactyly

Postby tophernator » Fri Jul 20, 2012 9:08 am

This isn't the founder effect, it is infact natural selection in action.
You see barn-building Amish people spend a large amount of time hammering nails to create shelter and pumping butter churners for food. The average Amish man over the age of 14 loses 0.3 fingers per year in nail hammering accidents, and butter churning requires at least 7 fingers. So a "normal" 10-fingered Amish man will be reduced to <7 fingers by their mid-twenties, and thus become an unappealing mate. While a polydactyl man may retain churning ability into the 30s thus producing more offspring.

Science.
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Re: [2012-July-19] Polydactyly

Postby Salacious Schoolmate » Fri Jul 20, 2012 12:21 pm

"your comment sounds like a great premise for a comic" - nobody
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Re: [2012-July-19] Polydactyly

Postby GUTCHUCKER » Fri Jul 20, 2012 2:08 pm

This nobody fellow is clearly wrong.
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Re: [2012-July-19] Polydactyly

Postby Lethal Interjection » Fri Jul 20, 2012 8:14 pm

Salacious Schoolmate wrote:"your comment sounds like a great premise for a comic" - nobody


I wish that guy would go ahead and make an account.

With pretty much every comic I think I would really like to hear nobody's opinions or comments about it.
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Re: [2012-July-19] Polydactyly

Postby Salacious Schoolmate » Fri Jul 20, 2012 8:33 pm

Oh, I think you'll be hearing from nobody pretty soon.
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Re: [2012-July-19] Polydactyly

Postby nobody, i think » Fri Jul 20, 2012 8:40 pm

Hey guys, I'm a sock puppet!
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Re: [2012-July-19] Polydactyly

Postby CuppaBro » Sat Jul 21, 2012 12:02 am

I speak for nobody when I say that July 20th's graph joke was effing hilarious.
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Re: [2012-July-19] Polydactyly

Postby Salacious Schoolmate » Sat Jul 21, 2012 12:25 am

STOP DERAILING THE THREAD

nobody haha what a guy
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Re: [2012-July-19] Polydactyly

Postby Keith » Sat Jul 21, 2012 2:21 pm

Polydactyly is much more common through inbreeding. I live in an area with three Amish families which are barely diverse enough to call different families. They are borderline inbreeding if not already there.
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Re: [2012-July-19] Polydactyly

Postby Edminster » Sat Jul 21, 2012 7:31 pm

thank you for your anecdote it is invaluable to our research
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