Scientists have found a "gene lefties"
Scientists are closer to understanding why some people are left-handed, and others - not. As it turned out, this is called a set of genes, which also controls the asymmetry in the body, it also defines a "manual" human preferences. William Brendler of Oxford University says that his team examined 3300 data of volunteers who agreed to undergo a test to determine whether they are natural right-handed or left-handed. Scientists say they have investigated about 100,000 similar mutations throughout the genome of volunteers and identified a mutation in a gene PCSK6, which is very well correlated with left-handedness in humans. "When we learned what really makes this gene, we made sure of that. PCSK6 plays a key role in the management of either the left or right asymmetry in the body. Disruption of this gene in laboratory mice even led to the fact that a number of rodents were formed on the wrong side, "- he said. At the most general sense, the mutations that are associated with right-or left-handedness of the person associated with the cluster of genes responsible for the asymmetry of the body. "Gene nature - this is the only explanation for why in our right-handed world sometimes there are people-oriented left-hander," - he said. Experts say that animals have a mechanism lefties and righties, too obvious, but it is not as bright as in humans. The reasons for such a vivid expression of the people have not yet fully understood. "For most people, the left hemisphere is dominant for language functions. Our idea is that the language has become very important for the body of the people and this has led to the development of the left hemisphere and the" left-handed "genes" - says Brendler. "The language has evolved from a series of gestures and when people do not communicate by speech, the right-or left-handed orientation was not so well developed."
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