Eli5:what’s the cause of someone being right or left handed? And why the vast majority is right handed?

Question

Eli5:what’s the cause of someone being right or left handed? And why the vast majority is right handed?

In: Biology

Answer 1

I’m a lefty, my hubby is a lefty. You’d think we’d only have left handed kids. Nope, one of each. Really messed with the right handed kid to transition from our left handed house to a right handed world.