Why do humans have black people, white people and yellow people?

Humans began to migrate from the African continent millions of years ago. Divide into several tribes. Take different directions in the migration. Before the separation of the Asian plate, our ancestors moved eastward to Asia. Others are the result of millions of years of emigration to major countries. In the process of migration, they constantly adapt to the climate, and their diet, characteristics, skin color and reproduction have also changed. In the end, white people, black people and yellow people have been divided. Scientists analyzed the DNA of women and men all over the world. Surprisingly, it is found that all women's DNA, whether black, white or yellow, comes from one mother, and all men's DNA comes from the same father. This amazing discovery made scientists call the first pair of human parents "Adam" and "Eve". After Noah's flood, human history began through Noah's three sons Shem, Ham and Japheth. Noah's descendants migrated to Asia today (yellow race); Including, moving to Africa (black); Yafo, moved to Europe (white). From the Bible, we can learn something about prehistoric times. ]