How Life Became Left-Handed

min0 lee · 04-21-2008, 07:47 PM

How Life Became Left-Handed | LiveScience

Lefties are just 11 percent of the world population. But take a close look at anyone's amino acids, which are protein's and thus life's tiny building blocks, and left-handers rule.
Left-handed amino acids are mirror images of their right-handed buddies, and though similar, the mirrored molecules are chemically different. For some reason, nearly every single organism exclusively relies on lefties.
Why does life discriminate on a molecular level? Neutron starlight might have zapped amino acids riding on comets and asteroids into a bias, and a little water might have concentrated them after they crashed into Earth, a team of scientists now say.......more here

min0 lee · 04-21-2008, 07:47 PM

Left-handed and right-handed amino acids, where the "R" stands for the part that makes each different - but the position of atoms in the molecules matter, too. Nearly all amino acids produced and used by organisms on Earth are lefties. Credit: NASA/JPL

DOMS · 04-21-2008, 07:49 PM

Fun fact: 4000 left-handed people die each year using tools designed for right-handed people.

min0 lee · 04-21-2008, 07:51 PM

Quote:

Originally Posted by DOMS

Fun fact: 4000 left-handed people die each year using tools designed for right-handed people.

I believe it.

Any lefthanders here?

**IainDaniel** · 04-21-2008, 07:53 PM

7% percent of golfers are lefthanded.

in Canada 25% of golfers are left handed.

**IainDaniel** · 04-21-2008, 08:05 PM

Was a lefty. But my teacher changed me when I was a kid.... damn superstitions. pretty close to ambidextrous now

Rubes · 04-21-2008, 09:23 PM

im ambidextrous. i write with my left hand most of the time but play sports right handed

JailHouse · 04-21-2008, 10:43 PM

Quote:

Originally Posted by IainDaniel

Was a lefty. But my teacher changed me when I was a kid.... damn superstitions. pretty close to ambidextrous now

Same thing happened to me in elementary school. It fucks me up when I play baseball because I can catch with ether hand but my body position can mess me up more.

Little Wing · 04-21-2008, 11:28 PM

after a number of strokes that impaired manual dexterity in his right hand Frank Frazetta switched to painting with his left hand.

Little Wing · 04-21-2008, 11:29 PM

my father and Tesla are lefties.

**Built** · 04-21-2008, 11:33 PM

Quote:

Originally Posted by DOMS

Fun fact: 4000 left-handed people die each year using tools designed for right-handed people.

Quote:

Originally Posted by IainDaniel

7% percent of golfers are lefthanded.

in Canada 25% of golfers are left handed.

This is because we cannot afford power tools...

tomuchgear · 04-22-2008, 12:18 PM

i am ambidextrous as well had to learn. way to many broken bones to not learn.

DaMayor · 04-24-2008, 09:13 PM

I'm bisexual...I can use either hand to.....oh, wrong forum. Sorry.

04-21-2008, 07:47 PM	#1
min0 lee Senior Member Elite Member Join Date: Oct 2004 Location: The Bronx, NYC Posts: 38,792 Photos: 542	How Life Became Left-Handed How Life Became Left-Handed \| LiveScience Lefties are just 11 percent of the world population. But take a close look at anyone's amino acids, which are protein's and thus life's tiny building blocks, and left-handers rule. Left-handed amino acids are mirror images of their right-handed buddies, and though similar, the mirrored molecules are chemically different. For some reason, nearly every single organism exclusively relies on lefties. Why does life discriminate on a molecular level? Neutron starlight might have zapped amino acids riding on comets and asteroids into a bias, and a little water might have concentrated them after they crashed into Earth, a team of scientists now say.......more here How To Do The Perfect Bench Press Rep Bodybuilding and Lifting Weights, the Difference ironmagazine-frapper

04-21-2008, 07:47 PM	#2
min0 lee Senior Member Elite Member Join Date: Oct 2004 Location: The Bronx, NYC Posts: 38,792 Photos: 542	Left-handed and right-handed amino acids, where the "R" stands for the part that makes each different - but the position of atoms in the molecules matter, too. Nearly all amino acids produced and used by organisms on Earth are lefties. Credit: NASA/JPL How To Do The Perfect Bench Press Rep Bodybuilding and Lifting Weights, the Difference ironmagazine-frapper

04-21-2008, 07:53 PM	#5
IainDaniel My Role Model Moderator Join Date: Nov 2002 Location: Ontario, Canada Posts: 17,548	7% percent of golfers are lefthanded. in Canada 25% of golfers are left handed. Obstacles don't have to stop you. If you run into a wall, don't turn around and give up. Figure out how to climb it, go through it, or work around it. Michael Jordan

04-21-2008, 08:05 PM	#6
IainDaniel My Role Model Moderator Join Date: Nov 2002 Location: Ontario, Canada Posts: 17,548	Was a lefty. But my teacher changed me when I was a kid.... damn superstitions. pretty close to ambidextrous now Obstacles don't have to stop you. If you run into a wall, don't turn around and give up. Figure out how to climb it, go through it, or work around it. Michael Jordan

04-21-2008, 09:23 PM	#7
Rubes your sisters better Join Date: Jan 2007 Location: michigan Posts: 1,143 Photos: 5	im ambidextrous. i write with my left hand most of the time but play sports right handed 5'7" 173lbsl squat:365x2 11/19/07 bench 225x3 1/11/08 40 time: 4.51sec march 10th 07 38" vertical

04-21-2008, 07:49 PM	#3
DOMS Metrosexual Join Date: Jul 2004 Posts: 22,092 Photos: 1	Fun fact: 4000 left-handed people die each year using tools designed for right-handed people.

04-21-2008, 11:28 PM	#9
Little Wing Mommmmmm, turn it down!!! Elite Member Join Date: Mar 2004 Location: United States Posts: 23,758 Photos: 191	after a number of strokes that impaired manual dexterity in his right hand Frank Frazetta switched to painting with his left hand. "MUSCLE IS TRULY GUARANTEED IF YOU WILL HONESTLY work out to BE YOUR VERY BEST - GO FOR IT!!! BECAUSE YOU CAN!!!!!! Take Care, John H."

04-21-2008, 11:29 PM	#10
Little Wing Mommmmmm, turn it down!!! Elite Member Join Date: Mar 2004 Location: United States Posts: 23,758 Photos: 191	my father and Tesla are lefties. "MUSCLE IS TRULY GUARANTEED IF YOU WILL HONESTLY work out to BE YOUR VERY BEST - GO FOR IT!!! BECAUSE YOU CAN!!!!!! Take Care, John H."

04-22-2008, 12:18 PM	#12
tomuchgear is gettin divorcd n drnkn Elite Member Join Date: Jan 2008 Location: ohio Posts: 1,682 Photos: 5	i am ambidextrous as well had to learn. way to many broken bones to not learn. i bet in the world you live in every one is a pony, eats rainbows, and craps butterflys. there is no damn justice in the world.

04-24-2008, 09:13 PM	#13
DaMayor On a Perpetual Bulk Elite Member Join Date: Jan 2003 Location: ... Posts: 6,145	I'm bisexual...I can use either hand to.....oh, wrong forum. Sorry.

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