MADRID.— Being left or right-handed depends on the dominant cerebral hemisphere, but it may not be the only cause. A study suggests that rare variants of a gene involved in shaping cells may play a role in making a person left-handed, reports EFE.
The research published in “Nature Communications” focused on studying several rare genetics, which affect less than 1% of the population, and whether the preference for using the left hand might be influenced in some way.
10% of people are left-handed, which occurs when the right brain hemisphere is more dominant in controlling that hand, while it is the left hemisphere in the case of right-handed people.
Brain asymmetries leading to handedness develop early in life and indicate that a genetic involvement is likely. Previous studies have already found several common genetic variants associated with left-handedness.
In this case, a team of Dutch researchers looked for rare genetic variants that might also be associated, for which they analyzed genome data from 38,043 left-handers and 313,271 right-handers from the United Kingdom biobank.
The research found that the TUBB4B gene is 2.7 times more likely to contain rare coding variants in people who are left-handed.- EFE
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2024-04-23 22:23:34
