Heredity 105 HEREDITY 64 Genetics 58 Genetics-- Heredity 44 Biology 22 heredity 22 Chromosomes 19 GENETICS : A Periodical Record Of Investigations Bearing On Heredity And Variation 19 GENETICS: A PERIODICAL RECORD OF INVESTIGATIONS BEARING ON HEREDITY AND VARIATION 12 HEREDITY: AN INTERNATIONAL JOURNAL OF GENETICS 12 Mutation 11 Evolution 9 Genes 8 Molecular genetics 7 Cell Division 6 Gene Mutation 6 sex determination 6 Cytoplasmic inheritance 5 THE JOURNAL OF HEREDITY 5 Chromosome 4 DNA 4 Mendelism 4 Microbiology 4 Recombinant DNA 4 cytogenetics 4 genetics 4 Animal Heredity 3 Bacteria 3 Developmental Psychology 3 Gene mapping 3