Two transects reveal remarkable variation in gene flow on opposite ends of a European toad hybrid zone I. van Riemsdijk, J.W. Arntzen, G.M. Bucciarelli, E. McCartney-Melstad, M. Rafajlovic, P.A. Scott, E. Toffelmier, H.B. Shaffer, B. Wielstra Heredity, Volume 131, 2023. Published Work Visit Site Social media impact badge provided by Altmetric