The genes of every nation on the earth are very mixed, and they are the result of the mixing of many ancient peoples, and the ancient peoples are the result of the mixing of many older tribal groups. As far as the Germans are concerned, their main ancestors include ancient Germans, ancient Celts, ancient Retians, ancient Slavs and Romans, and the ancient Germans were several people from the Paleolithic Age to the Neolithic Age. The result of mixed waves of immigrants from different origins.
Since humans emerged from Africa, there has been no pure bloodline. In fact, the main paternal ancestors and the main maternal ancestors of most ethnic groups are not from the same ancient race at all, such as our Han people.
The nation itself is more of a cultural collection than a blood collection