SEMIDOMINANCE OF rad18-2 FOR SEVERAL PHENOTYPIC CHARACTERS IN SACCHAROMYCES CEREVISIAE

1 Genetic Toxicology Branch, Division of Toxicology, Food and Drug Administration, Washington, D.C. 20204

Inbred diploid yeast strains heterozygous or homozygous for the rad18-2 allele and carrying markers for detection of mitotic recombination were constructed. The homozygous rad18-2/rad18-2 strain was highly sensitive to killing by UV light, showed greatly elevated frequencies of spontaneous and induced mitotic recombination and was more sensitive to trimethoprim than the wild-type diploid. The heterozygous strain RAD18/rad18-2 was intermediate in its response for these same phenotypic characters. These findings are discussed in the light of other studies in which incomplete dominance of genes involved in some aspect of DNA repair has been reported.

Submitted on May 25, 1983
Accepted on December 9, 1983




This article has been cited by other articles:


Home page
Antimicrob. Agents Chemother.Home page
G. Chamilos, R. E. Lewis, G. A. Lamaris, N. D. Albert, and D. P. Kontoyiannis
Genomewide Screening for Genes Associated with Gliotoxin Resistance and Sensitivity in Saccharomyces cerevisiae
Antimicrob. Agents Chemother., April 1, 2008; 52(4): 1325 - 1329.
[Abstract] [Full Text] [PDF]