This lecture covers the independent assortment of genes, linkage studies for genetic diseases, Mendelian laws, and the inheritance of albinism. It explores the concepts of complete dominance, complementation, loss-of-function mutations, and the molecular basis of alleles. The discussion extends to the effect of the environment on phenotypes, specificity of meiosis I, homologous recombination, and crossing-overs during meiotic division. Real-life examples and pedigree analysis are used to illustrate these genetic concepts.