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flag A study links a gene, TUBB4B, to left-handedness in 2.7 times more left-handed individuals.

flag 10% of people are left-handed, including celebrities like Lady Gaga, Barack Obama, and Bill Gates. flag A new study identifies rare variants of a gene, TUBB4B, in 2.7 times more left-handed people than in right-handed ones. flag This gene is involved in controlling the shape of cells and may play a role in the development of brain asymmetry that underlies dominant hand determination.

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