Eye color is also related to melanin.

眼睛的颜与有关。

But some of them happened to produce less melanin.

比如钙，铁，镁，磷酸盐，锌。

This pigment ratio is controlled by a gene, which also controls the melanin in our skin.

这种比例是由一个基因控制的，这个基因也控制着我们皮肤中的。

The melanin is what darkens your skin.

使皮肤变。

The melanin makes the color of the eyes?

了眼睛的颜？

The more melanin you have, the darker your skin.

你拥有的越多，你的皮肤越。

OCA2 is responsible for a protein called melanin in our eyes.

OCA2 负责我们眼睛中一种叫做的蛋白质。

For light-skin people, that extra melanin darkens their skin and produces a tan.

这取于阳光照射时皮肤的反应。

Some are yellow others are red and some contain the dark melanin pigment.

有些是黄的，有红的， 同时也有些有深深的。人们以为。

The melanin levels in a baby's eyes determine how dark their eyes become.

婴儿眼睛中的水平了他们的眼睛变的程度。

If they can't mature, they won't be able to produce melanin.

如果它们不能成熟，就不能产生。

My eyes have a lot of melanin, that's why they are dark brown.

我的眼睛有很多，所以是深褐的。

Your eyes don't have any pigment or melanin in them.

你的眼睛没有或其他。

Melanocytes associated with the hair root will deposit melanin to the cells that compose our hair.

与发根相关的细胞会将沉积到构成我们头发的细胞中。

However, for those one in 100, the amount of melanin in each eye isn't uniform.

然而，对于这分之一的人来说，每只眼睛中的数量并不均匀。

Where melanin isn't produced, those areas will turn white, which is why people get white hair.

在不产生的地方，这些区域就会变白，这就是为什么人们会有白头发。

Squid ink is made mostly of mucus and melanin, which produces its dark coloring.

乌贼墨水主要由粘液和组成，从而造成了深。

Thus, melanin production can be controlled by a few genes being turned on and off.

因此，的产生可以由一些基因的开启和关闭来控制。

It gets its color from two types of melanin: brown-black eumelanin and red-yellow pheomelanin.

棕的真和红黄的褐。

Since melanin is a light brownish, tan colored pigment, so are our freckles.

因为是一种浅棕或者是棕褐的，我们的雀斑也是这个颜。