Identifies and characterizes a gene, FAR3, that is required for pheromone-mediated G1 arrest in Saccharomyces cerevisiae but not for signal transduction. Mutant isolation and genetic analysis; Assays of the Far phenotype and phemorone response; DNA sequence analysis of the far3-1 and far3-2 alleles; Isolation of yeast mutants defective for G1 arrest.