The 5th B Chromosome Conference was held in Petnica, October 14-17 2023, organized by the Institute for Biological Research "Siniša Stanković" and the Serbia Genetic Society as co-organizers. Eight plenary lectures, eighteen oral and seven poster presentations were held.

We spent four successful days together exchanging ideas and achievements in the B chromosome. In addition to active participation in the scientific program, the participants had the opportunity to enjoy the natural beauty and gastronomy of Serbia. Research station Petnica was a great host.