History 350 Genes 160 Genetics 135 History and criticism 119 Politics and government 91 Philosophy 77 Heat 73 Molecular biology 71 Genetic engineering 68 Social conditions 63 Biotechnology 58 Gene expression 58 DNA 57 Genomics 53 Biochemistry 51 Race relations 50 English literature 42 Gene mapping 41 Molecular Biology 40 Plant Breeding and Genetics 40 Criticism and interpretation 39 Women 38 Social aspects 37 Cytology 36 Genetic Engineering, Gene Transfer and Transgenics, (New June 2002) 36 Physics 35 genetics 35 Gene 33 Molecular genetics 33 Bioinformatics 32