Did you know that just 10% of the population is left-handed? Scientists don't know why some people are lefties. Genetics seem to be responsible about 25% of the time, but even identical twins, who share the same genes can sometimes having differing dominant hands. People believe left-handedness can affect many things. -your performance in school, your skill at sports and even how much money you make. There are plenty of theories about what determines which hand you write with, but a growing number of experts believe its random, Mixed handed peoples- who use both hands equally appear to be more different from people who favour one hand over the other. In comparison The difference between the righties and lefties are minimal?
Which of the following details from the passage supports the main idea?
Mixed-handed differs more from people who favour one hand over the other
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