There are many countries in this world whose people are white. So there are some countries whose people are black.
People remain worried about why this happens. Today we will try to know in detail about this topic, so let’s know.
Why are some people white and some people black?
Today, genetic science has made so much progress that a map of the genome of humans has been prepared, which has dispelled all the myths about different races
Now it has been proved that the DNA of one person is 99.9 percent the same as that of another person, even if they are both of different castes.
The variation in the remaining 0.1 percent is what distinguishes one person from another.
Let us tell you that based on this fact, biologists say that today’s human is a descendant of Homo sapiens living in Africa 2 million years ago.
That means all our ancestors were Africans. Africa is a very hot region.
Black color helps in avoiding the sun’s ultraviolet rays. According to scientists, skin color is determined by a chemical called melanin.
Skin color turns black due to excess amount of melanin
. The black color also prevents vitamin B called folate from being destroyed.
Black skin prevents the strong rays of the sun from entering, affecting the production of Vitamin D3.
But when the human moved towards cold regions, the lack of Vitamin D3 made his skin lighter.
Some experts believe that until thirteen thousand years ago, the color of Europeans was darker, they gradually became white.