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为什么中国人的头发都是黑色的,quora网友答

Why do all Chinese people have black hair?

为什么中国人的头发都是黑色的

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译文来源:Quora中文网 http://www.quora123.com/life/2017-06-19/315.html

Gwydion Madawc Williams, Read a lot about this
Answered Sep 6, 2015
Black hair is the global norm. Other shades are mostly seen when levels of sunlight are low. Not true of most of China, so few have anything other than black hair.

黑发是全球标准

当阳光强度低的时候,其他色彩阴影大多也能看到的

不知道中国大多数地区如何,不过很少人的头发不是黑色的

 

Ruizhe Ma
Answered Sep 19, 2015
Hair color was originally black, but because of the different environments where our ancestors evolved, some mutations occurred. Another thing is that it is hard for lighter hair color to be commonly observed in large population of black hair, because black hair color is the dominant gene.
Despite this, Chinese hair isn't all black, if you observe many people you can see that there are actually different shades of black, and there are some people (very few) who has hair color such as reddish or brownish.

头发颜色本来就黑色的

在不同环境影响下的演变,出现了一些突变。

另一个就是,在黑发人群中,很难看到浅色头发,毕竟黑色才是强势基因。

尽管如此, 并非所有中国人的头发都是黑色的

认真观察,其实还是有不同色调的。

少部分人的头发是微红或褐色的

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