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The Unique Science of Left-Handedness

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Steak knives, scissors, writing desks, and power tools: If you bring any of these things up around someone and they cringe, they either have a bizarre story to tell or they’re just left-handed, and, like 15 percent of the population, live in a world that’s not designed for them.

But handedness goes deeper than how you like to hold a pen. A dive into the genetics of handedness reveals that southpaws have quite a few other things in common, as well. But before that, it’s important to understand where handedness comes from.

Where Does Handedness Come From?

It used to be thought that lefties came to be as a result of a mother being stressed during pregnancy, but a more scientifically valid explanation has traced handedness to specific genes. Geneticists debated for years over whether the genes responsible for handedness were spread throughout our DNA or whether it was just one gene; there seemed to be no clear pattern.

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Click the link below for the article:

https://getpocket.com/explore/item/the-unique-science-of-left-handedness?utm_source=pocket_discover

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