LEFT HANDED PEOPLE

IN MANY CULTURES THE LEFT HAND IS CONSIDERED

UNCLEAN BECAUSE IT IS USED TO WIPE

AFTER DEFECATION.

THERE ARE MANY PARTS OF THE WORLD WHERE CHILDREN

ARE PUNISHED IN SCHOOL FOR USING THEIR LEFT HAND.

THE BOSTON STRANGLER, JACK THE RIPPER, AND

OSAMA BID LADEN WERE LEFTIES.

SO WERE ALBERT EINSTEIN, BENJAMIN FRANKLIN

AND ALEXANDER THE GREAT

ABOUT 50% OF RATS, CATS, AND MICE ARE LEFT PAWED.

ASSYMETRICAL BEHAVIOUR PATTERNS IN HUMANS

EXTEND TO THE FOOT, EYE, AND EAR AS WELL.

THE GENE LRRTM1 HAS BEEN FOUND TO PLAY A

SIGNIFICANT ROLE IN HANDEDNESS.

ONE IN FOUR APOLLO ASTRONAUTS WERE LEFT HANDED