GENETICS 20 BIOCHEMISTRY 10 BIOLOGY 9 ELEMENTS OF ECOLOGY 6 PRINCIPLES OF GENETICS 6 STATISTICS 6 Genetics 5 PRINCIPLES OF PLANT BREEDING 5 BIOCHEMICAL 4 BOTANY 4 GENERAL VIROLOGY 4 RADIATION 4 CELL BIOLOGY 3 INTRODUCTORY MYCOLOGY Y 3 PLANT 3 PLANT ANATOMY 3 PROBABILITY 3 STATISTICAL 3 BIOPHYSICAL SCIENCE - A STUDY PROGRAM 2 BIOTECHNOLOGY 2 CELL 2 CHEMISTRY 2 CYTOGENETICS 2 CYTOLOGICAL TECHNIQUE 2 ENDOCRINOLOGY 2 EVOLUTION 2 EVOLUTION OF CROP PLANTS 2 EXPERIMENTS 2 GENES 2 HEREDITY 2