Genetic engineering 239 Biotechnology 92 Genetic Engineering 75 Genetic Engineering, Gene Transfer and Transgenics, (New June 2002) 36 Molecular biology 33 Plant genetic engineering 32 Genetically engineered organisms 27 Plant Breeding and Genetics 25 Transgenic plants 25 Genetic engineering-- Biotechnology 22 Plants 21 Recombinant DNA 20 genetic engineering 20 Plant breeding 19 Genetic transformation 17 Genomics 17 GENETIC ENGINEERING 16 Genetics 15 Molecular Biology 15 Plant biotechnology 15 Crops 14 Molecular genetics 13 DNA 12 Genes 12 DNA, Recombinant 11 Molecular Biology and Molecular Genetics, (Discontinued March 2000, Reinstated and Revised June 2002) 11 Genomes 10 Methodology 10 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 10 Gene mapping 9