The workshop will explore the key concepts of ancestry inference and population assignment, focusing on the different applications of biogeographic information in the population and forensic genetic fields. Through practical exercises, participants will work with commonly used software for ancestry analyses. Discussions will cover the impact of marker selection and reference population data on the results. The incorporation of biogeographic ancestry in forensic genetic cases and the calculation of the weight of evidence will be presented, and its advantages and limitations will be addressed. Participants will be invited to discuss and interpret ancestry results in population and forensic genetic contexts.