Drosophilia culture; the physical basis of heredity; probability; the monohybrid cross; independent assortment in a dihybrid cross; inheritance related to sex; multiple alleles and human blood groups; linked genes and location of genes on a chromosome; mutations; salivary gland chromosomes of drosophilia; human genetics; working with bacteria, phage and DNA; restriction digestion, electrophoretic separation, and mapping cloning I; plasmid transformation cloning II; plasmid DNA extraction and transformed cells cloning III; phage recombination; the Ames test, detecting mutagens; isolation of eukaryotic DNA from tissue; separation of genomic DNA, southern transfer and hybridization; genes in populations.