But some of them happened to produce less melanin.

比如钙，铁，镁，磷酸盐，锌。

Eye color is also related to melanin.

眼睛与黑素有关。

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

这种素比例是由一个基因控制，这个基因也控制着皮肤中黑素。

The melanin is what darkens your skin.

黑素使皮肤变黑。

The more melanin you have, the darker your skin.

你拥有黑素越多，你皮肤越黑。

The melanin makes the color of the eyes?

黑素决定了眼睛？

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

你眼睛没有黑或其他素。

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

OCA2 负责眼睛中一种叫做黑素蛋白质。

The gray comes because we lose melanin.

灰是因失去了黑素。

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

这取决于阳光照射时皮肤反应。

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

有些是黄，有红， 同时也有些有深深黑素。人以。

Your hair's colour is determined by something called melanin, which is pigment.

头发是由一种叫做黑素素决定。

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

眼睛有很多黑素，所以是深褐。

They contained minerals that would result from the decay of melanin.

它含有黑素衰变後矿物。

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

婴儿眼睛中黑素水平决定了他眼睛变黑程度。

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

棕黑真黑素和红黄褐素。

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

与发根相关黑素细胞会将黑素沉积到构成头发细胞中。

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

如果它不能成熟，就不能产生黑素。

Animals get their shades of browns, blacks and reds, as the result of a pigment called melanin.

动物身上棕、黑和红是一种叫做黑素素所导致。

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

然而，对于这百分之一人来说，每只眼睛中黑素数量并不均匀。