Home News Archive - MPI of Neurobiology The brain has specific regions for processing objects within reach Publications of Filip de Ridder All genres Journal Article (1) Journal Article (1) 1998 Journal Article Beukeboom, L. W.; Seif, M.; Plowman, A. B.; de Ridder, F.; Michiels, N. K.: Phenotypic fitness effects of B chromosomes in the pseudogamous parthenogenetic planarian Polycelis nigra. Heredity 80 (5), pp. 594 - 603 (1998) MPG.PuRe DOI