If you have two copies of the so-called Right Shift mutation, language and hand dominance move to the left hemisphere.

如果你有两个所谓的右移突变，对语言和手的控制转移到左脑。

That shift is slightly less if you carry one copy, and if you don't carry the Right Shift mutation at all, language and handedness could go to the right or left, just by chance.

如果你携带一种，这种转变会稍微少一点，如果你根本不携带右移突变，语言控制和用手习惯可能会转移到右边、也可能是左边，就随机了。