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Feb 20, 2013

why are some people left handed?

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    Feb 20, 2013

    According to research 85% of people are right handed and 15% are left handed. This is due to biological and, most likely, genetic causes. There are two genes responsible for these D genes and C genes. D genes are more frequent in most of the population and promote right-hand preference in the majority of humans. Whereas, C genes determines the hand preference randomly. 50% chance is of being right-handed and 50% is of left-handed.

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