Abstract
A visible mutation with salmon-colored eyes was found in our colony of Glossina morsitans morsitans Westwood. The trait, designated salmon (sal), is a recessive controlled by an X-chromosome locus which is at least 36 map units from ocra. Adults emerged from less than 20% of the puparia obtained by mating females homozygous for salmon with the hemizygous salmon males; these flies have very pale eyes and die at an early age. The mutant is genetically rescuable since females homozygous for salmon mated with wild-type males produced the normal number of phenotypically wild-type female offspring and about 32% of the expected number of male offspring; the males have very pale eyes.
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