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The Role Of Fish In Research On Genetics And Evolution / C. Kosswig -- The Sex-determining Mechanism Of The Platyfish, Xiphophorus Maculatus / K.d. Kallman -- Preliminary Report On Sex Differentiation In Germ Cells Of Normal And Transplanted Gonads In The Fish, Oryzias Latipes / N. Satoh And N. Egami -- Regulation Of Gene Expression In The Gordon-kosswig Melanoma System. 1, The Distribution Of The Controlling Genes In The Genome Of The Xiphophorin Fish, Platypoecilus Maculatus And Platypoecilus Variatus / A. Anders, F. Anders, And K. Klinke ; 2, The Arrangement Of Chromatophore Determining Loci And Regulating Elements In The Sex Chromosomes Of Xiphophorin Fish, Platypoecilus Maculatus And Platypoecilus Variatus / A. Anders, F. Anders, And K. Klinke -- Radiation Damage In Fish / C.e. Purdom And D.s. Woodhead -- Dominant Lethal Mutation Rates In The Fish, Oryzias Latipes, Irradiated At Various Stages Of Gametogenesis / N. Egami And Y. Hyodo-taguchi --^ Chromosome Manipulation In Fish / C.e. Purdom And R.f. Lincoln -- Teleosts As A Tool In Mutation Research / J.h. Schröder -- Chromosomes Of Two Fish-species Of The Genus Diretmus (osteichthyes, Beryciformes: Diretmidae) / A. Post -- The Chromosomes Of Some African Anuran Species / J.j. Scheel -- Incorporation Of H³-thymidine Into The Dna Of Melanotic And Amelanotic Melanoma Explants After Whole-body X-irradiation Of Melanoma-bearing Platyfish-swordtail Hybrids / J. Vielkind, D.l. Pursglove, And U. Vielkind -- Fate Of Bacterial Dna Injected Into Embryos Of Poeciliid Fish / J. Vielkind, M. Schwab, And F. Anders -- Regulation Of The Pigment Cell Arrangements In Species And Interspecies Hybrids Of Xiphophorus (pisces, Poeciliidae) By Cellular Interactions On The Fish Body / W. Lueken, E.r. Schmidt, And K. Lepper -- Experimentally Induced Sexual Maturity In Artificially Reared Male Eels (anguilla Anguilla) / Ch. Meske --^ Change Of Aggressive Readiness In Post-irradiation Generations Of The Convict Cichlid Fish, Cichlasoma Nigrofasaiatum / S. Holzberg -- Attraction And Sexual Cycle Of Poeciliids / J. Parzefall -- Genetic Problems In The Regressive Evolution Of Cavernicolous Fish / N. Peters And G. Peters -- Phylogenetic Age And Degree Of Reduction Of Cave Animals / H. Wilkens -- Origin And Synthesis Of A Unisexual Fish / R.j. Schultz -- Fish And Nature's Extensive Experiments With Gene Duplication / S. Ohno -- Biochemical Polymorphism And Microevolution Processes In Fish / V.s. Kirpichnikov -- Developmental And Biochemical Genetics Of Lactate Dehydrogenase Isozymes In Fishes / G.s. Whitt, E.t. Miller, And J.b. Shaklee -- Biochemical Evolution In The Genus Xiphophorus (poeciliidae, Teleostei) / A. Scholl --^ Tissue-specific Preferential Expression Of The Xiphophorus Xiphidium Allele For 6-phosphogluconate Dehydrogenase In Interspecific Hybrids Of Platyfish (poeciliidae, Teleostei) / A. Scholl And F. Anders -- Investigations On The Serum Polymorphism Of Trout And Carp / H.-h. Reichenbach-klinke -- Inheritance Of The S-form Of Nadp-dependent Isocitrate Dehydrogenase Polymorphism In Rainbow Trout / H.-h. Ropers, W. Engel, And U. Wolf -- Biochemical Variants In Pacific Salmon And Rainbow Trout : Their Inheritance And Application In Population Studies / F.m. Utter, H.o. Hodgins, F.w. Allendorf, A.g. Johnson, And J.l. Mighell. Ed. By J.h. Schröder. Symposium Held October 13-15, 1972 In Neuherberg, Germany. Includes Bibliographical References.