Changes of zeste phenotype induced by autosomal mutations in Drosophila melanogaster

Two types of autosomal mutations have been induced by EMS. One type (enhancer) has the same effect on the zeste phenotype as have additional white subloci, the other (suppressor) acts similar to white subloci deficiencies. Enhancers and suppressors are dominant mutations with recessive lethal effects. Their interactions with different zeste and white alleles are discussed.