We have 16 pixels in our image, and each of those needs 3 bytes of color data.

我们的图像有 16 个像素，每个像素都需要 3 个字节的颜色数据。

The skin color data and the DNA sequences led the researchers to identify a genetic variant for lighter skin that arose in Asia 20- to 30-thousand years ago.

依据肤色数据和DNA序列，研究人员找到了一种导致较浅肤色的基因变体，这种变体在2万到3万年前出现。