Microbiology 174 Genetics 173 Biochemistry 154 Statistics 151 Entomology 112 Metabolism 96 Photosynthesis 96 metabolism 94 Botany 88 Fungi 82 Physiology 81 Insects 75 Zoology 74 Ecology 73 Biology 69 morphology 58 Plant physiology 56 genetics 55 Organic chemistry 54 enzymes 54 Cytology 52 Morphology 49 Plant growth 49 Mathematics 47 Bacteria 45 fungi 45 photosynthesis 45 Chromosomes 44 Virus research 44 Mycology 43