
Recent simultaneous progress in human and animal model genetics and the  advent of microarray whole genome expression profiling have produced prodigious  data sets on genetic loci, potential candidate genes, and differential gene  expression related to alcoholism and ethanol behaviors. Validated target genes  or gene networks functioning in alcoholism are still of meager proportions.
 Genetical genomics, which combines genetic analysis of both traditional  phenotypes and whole genome expression data, offers a potential methodology for  characterizing brain gene networks functioning in alcoholism.
This chapter will describe concepts, approaches, and recent findings in the field of genetical genomics as it applies to alcohol research.
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