Description:Content: Isopentenoids and geochemistry / Simon C. Brassell -- Hopanoid and other polyterpenoid biosynthesis in eubacteria : phylogenetic significance / Michel Rohmer and Philippe Bisseret -- Evolution of sterol and triterpene cyclases / Christopher J. Buntel and John H. Griffin -- Molecular asymmetry and sterol evolution / W. David Nes and M. Venkatramesh -- Phylogenetic distribution of sterols / Glenn W. Patterson -- Evolution of the oxysterol pathway / Edward J. Parish -- Evolutionary aspects of steroid utilization in insects / James A. Svoboda, Mark F. Feldlaufer, and Gunter F. Weirich -- Evolution of the endomembrane system / D. James Morré -- Evolution of structure and function of fatty acids and their metabolites / James L. Kerwin -- Evolution of lignan and neolignan biochemical pathways / Norman G. Lewis and Laurence B. Davin.