What is the genetic significance of humans being either left-handed or right-handed?
The handedness of a person, whether left or right, is determined by the dominant hemisphere of their brain. While most individuals are right-handed, about 10% are left-handed. The exact cause of this is still not well understood but research suggests a combination of genetic and environmental factors could be at play.

Some studies have noted that there is a slight excess of certain genes among left-handers. For instance, a 2013 study
Left-handedness and right-handedness are traits related to preferred use of the hands, and the genes that influence these traits have not been conclusively identified. However, recent studies suggest that there are likely multiple genes that contribute to handedness.

There are several theories about the genetic basis of handedness. One theory is that the genes involved in brain development and lateralization might influence handedness. Studies have identified several genes that have been associated with hand preference in certain