But this evolutionary mechanism combining dissymmetry, anatomy, and chance does not provide an adequate explanation of why right-handedness should have become predominant.

但是这种结合了不对称、解剖学和偶然性的进化机制并不能提供一个充分的解释来说明为什么右利手应该成为优势。

youdao

Nor does it explain why, in a species where one parent determines handedness, a brood is not exclusively right or left-handed when the offspring would have the same genetic predisposition.

这也不能解释为什么在一个由父母一方决定利手的物种中，当后代具有相同的遗传倾向时，他们并非完全是右撇子或左撇子。

youdao

Nor does it explain why, in a species where one parent determines handedness, a brood is not exclusively right-or left-handed when the offspring would have the same genetic predisposition.

这也不能解释为什么在一个由父母一方决定用利手的物种中，当后代具有相同的遗传倾向时，他们并非完全是右撇子或左撇子。

youdao

The researchers say their findings add to the evidence that the evolutionary forces that cause right- and left-handedness are independent of culture.

BBC: Cave handprint, Montpellier University

George Michel, a professor of psychology at the University of North Carolina at Greensboro who has studied handedness in infants, described handedness as a continuum shifted largely to the right.

WSJ: Baseball's Oddest Fraternity

They suggest that because left-handedness is relatively rare it provides certain advantages over those who are right-handed, such as in solo and group fighting.

BBC: Cave handprint, Montpellier University