Erratum pasted onto front end-paper. / Copies of author's previously published article inserted. / Bibliography: leaves 167-180. / 180 leaves, [51] leaves of plates : ill. (chiefly col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Reanalyses the effects of the absence of CreA in the cell, raises antibodies for the detection of CreA and identifies new loci involved in carbon catabolite repression by using different genetic selection methods. / Thesis (Ph.D.)--University of Adelaide, Dept. of Genetics, 1999?