Each gene has the potential for mutation–the more mutations a person has in any one direction (toward right handedness or left handedness) the more likely they are to use that hand as their dominant hand, or so the researchers speculate.
Keeping this in view, can you be left handed if your parents are not?
So if two lefties had a baby, the baby should turn out left-handed. This is not the case for your family or lots of others either. When people have looked at handedness, it just doesn't follow simple rules. For example, if both parents are right-handed, there is a 1 in 10 chance of having a left-handed child.
Is it rare to be a lefty?
Scientists have long wondered why left-handed people are a rarity. Stories about being slapped on the wrist for being a lefty aside, there must be some deeper, evolutionary reason, scientists figure. A new study suggests lefties are rare because of the balance between cooperation and competition in human evolution.
Can you get a disability check for being left handed?
Clearly, being left-handed is not without its disadvantages. However, left-handedness does not rise to the level of being a disability. The Social Security Administration has a list of all conditions which qualify as disabilities.