Hrvatska akademija znanosti i umjetnosti, Zavod za biomedicinske znanosti u Rijeci i Medicinski fakultet Sveučilišta u Rijeci sa zadovoljstvom pozivaju sve zainteresirane na pozvano predavanje (na engleskom jeziku)

Forging an evolutionary individual from separate replicators

koje će održati prof. dr. sc. Paul Rainey, evolucijski biolog/mikrobiolog i direktor Instituta Max Planck za evolucijsku biologiju u Plönu (Njemačka).

Predavanje će se održati 27. studenoga 2026. s početkom u 14:00 sati
u Vijećnici Medicinskog fakulteta u Rijeci (Braće Branchetta 20).

Sažetak: Major evolutionary transitions occur when independently replicating particles unite into a higher-level individual. How selection comes to work on particle collectives and generates reliable heredity is unresolved. By packaging red and green plasmids in yeast cells we made plasmid communities units of
selection: cell boundaries supplied discreteness, segregation generated variation, and cell division reproduced communities. Communities colouring cells yellow were preferentially propagated. Initially, yellow parents rarely produced yellow offspring, but continued selection aligned replicative fates of the two plasmids favouring recombinants that fused with the endogenous 2µ element. Chimera stability was secured by mutations in FLP1, which encodes a recombinase that otherwise resolves fused replicons. Reliable collective heredity, here a derived product of higher-level selection, marked completion of an evolutionary transition in individuality.

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