A synthesis of recent findings suggests that genes involved in early brain development are crucial for understanding why some people are left-handed. While left-handedness runs in families, scientists have long been puzzled by the reason behind this trait. Analysis of genetic variants, both common and rare, points to a strong link between genes associated with tubulins and handedness. Tubulins are proteins involved in crucial processes like axon growth and guidance, and building the inner structure of motile cilia, all essential for proper brain development and asymmetry.
A synthesis of recent findings suggests that genes involved in early development of the brain are crucial.About 10 out of 100 people are left-handed. Understanding the reason why has intrigued scientists for many years. However, despite more than 100 years of scientific research on left-handedness, it is still not well understood why some people are left-handed while most people are right-handed.
Studies on rare genetic variants: These genetic variants are present in less than 1% of the population and can include extremely rare mutations that only occur in a few people, but may have strong effects.By analyzing the results of these different lines of research, several important insights about the genetic factors influencing left-handedness were discussed in the article.
GENETICS HANDEDNESS BRAIN DEVELOPMENT TUBULINS AXON GROWTH
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