Approximately 10% of the population is left-handed, yet the reasons remain largely unexplained despite over a century of research. Recent advancements suggest that genetic factors are significant, with new studies focusing on both common and rare genetic variants, as well as epigenetics. Particularly, tubulin genes have been indicated as crucial in the early development of the brain related to handedness. These findings contribute to a deeper understanding of why some individuals are left-handed, illuminating the complexities of human genetic variation.
About 10 out of 100 people are left-handed, yet the reasons why remain unclear despite extensive scientific research over the years.
Genetic factors play a role in left-handedness, as evidenced by familial patterns and new insights from modern molecular techniques.
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