Start with the regional definitions (Question 3) and the explanation of why 0% or low percentages happen (Question 12). Then look at three things:
Your ancient matches. They often make it clear whether your ancestry lines up with a particular historical layer — Aegean Neolithic farmer, Mycenaean Bronze Age, Bulgarian Chalcolithic, Iron Gates Mesolithic — rather than a specific modern region.
Neighboring anchors. If you expected a strong Serbian signal but see a strong Bulgarian one, those two regions overlap heavily in the ancient record, especially in the Iron Age and medieval periods. The same goes for Northern Greek / North Macedonian, and Croatian / Bosnian / Serbian.
The era timeline. Your strongest matches by era can reveal which prehistoric populations contributed most to your ancestry, even when the regional distribution looks surprising.
If it still seems off, consider whether your documented ancestry includes populations from outside this report's scope — Italy, Iberia, Eastern Europe, the Levant, North Africa. Those signals aren't captured here, and they can change how the Greek and Balkan component gets distributed.
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