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why some people are borned only left handed and not right handed?

why some people are borned only left handed and not right handed?
 
 
 

Grade:11

1 Answers

Umakant biswal
5349 Points
7 years ago
@ rutika , 
Its till now a mystry . 
in 2007 , scientist discovered a gene which has something to do with the left handedness , but till now the researches are going on , 
and as of now , the scientists are saying that it have something to do with the genes , the gene of left handedness are inherited from the parents , but its not yet sure as of now . 
AND ACC TO SURVEY ONLY 10 PERCENT PEOPLE OF THIS WORLD ARE LEFT HANDED . 
HOPE IT CLEARS YOUR DOUBT 
ALL THE BEST ..

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