Genetic and experimental studies on a mutant gene (c) determining absence of heart action in embryos of the Mexican axolotl (Ambystoma mexicanum).

Ambystoma/embryology Animals Cell Differentiation Female Genes, Recessive Genotype Heart/embryology Heart Diseases/embryology,genetics,pathology Heart Transplantation Heterozygote Homozygote Larva/physiology Male Mesoderm/transplantation Microscopy, Electron Mutation Myocardium/pathology Parabiosis Pedigree Phenotype Pigmentation Time Factors Transplantation, Homologous