What are the ethnic compositions of Bosnia especially the isolated mountainous central areas, do they have significant illyrian or mixed Illyro-Slav ancestry, and are there any Germanic (Gothic) genes?
Also are they one of the oldest european populations along with the Sardinians, being one of the first Europeans?
I'm pretty sure you are better off asking this question in r/askscience, or rephrasing it to ask about movement of ancient slavic and germanic tribes on territory of current Bosnia and Herzegovina.