STUDIES ON THE SAL LOCUS IN DROSOPHILA PSEUDOOBSCURA. I. THE BANDING PATTERN OF THE TIP OF SALIVARY CHROMOSOME 3 IN LARVAE HOMOZYGOUS AND HETEROZYGOUS FOR SAL

1 Laboratories of Anatomy, Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104

In the mutant sal the banding pattern at the tip of chromosome 3 is changed. Certain bands are compacted instead of being partially puffed. In sal+/sal heterozygotes, when the chromosome tips are paired they both show the sal+ pattern or are intermediate; but when unpaired, each shows the pattern characteristic of its own genotype.

Submitted on June 5, 1972