Medical genetics in perspective -- Human genome structure and function -- Nucleic acid structure and function -- Molecular genetic analysis -- Chromosomes -- Gametogenesis -- Chromosome aberrations -- Typical mendelian inheritance -- Atypical mendelian inheritance -- Non-mendelian inheritance -- Medical genetics in populations -- Genetic assessment, genetic counselling and reproductive options -- Family history of cancer -- Family history of common adult-onset disorder -- Strong family history : typical Mendelian disease -- Strong family history : other inheritance mechanisms -- Positive screening result -- Family history of one or more congenital malformations -- Electronic databases : a user's guide.