Most eggs laid by females with homozygous germline clones appear not to be fertilised and those that do initiate development die before cuticle formation. Homozygous somatic clones are generated in the abdomens of adult males at a frequency nearly identical to that of control clones. Mutant clones in the abdomen often cause a transformation of A5 and A6 to a more anterior segment identity. Homozygous clones in the leg often cause outgrowths from the ventral surface of the leg. These outgrowths may occur anywhere from the coxa to the tibia along the proximodistal axis, but are most common in the coxa-trochanter region. The distal-most portion of the outgrowth is always mutant for Gug, but more proximal regions of the outgrowth are usually a mix of mutant and wild-type cells, or are composed entirely of wild-type cells.
Gug[+]/Gug1757 is an enhancer | maternal effect of partially lethal | heat sensitive phenotype of ftz5/ftz13
Gug[+]/Gug1757 is an enhancer of wing margin bristle | ectopic phenotype of Ubx1
Gug[+]/Gug1757 is an enhancer of embryonic segment phenotype of ftz5/ftz13
Gug[+]/Gug1757 is an enhancer of adult abdominal segment 4 | ectopic phenotype of trx3
Gug[+]/Gug1757 is an enhancer of adult abdominal segment 5 phenotype of trx3
Gug1757 is a suppressor of prothoracic leg | ectopic phenotype of ScrMsc
Gug[+]/Gug1757 is a suppressor of mesothoracic leg phenotype of Pcl4/Pcl1
Gug[+]/Gug1757 is a suppressor of prothoracic leg | ectopic phenotype of Pcl4/Pcl1
Gug1757 is a suppressor of mesothoracic leg phenotype of ScrMsc
Gug1757 dominantly enhances the lethality of ftz5/ftz13 animals at 26.5oC (fewer animals survive to adulthood). This interaction is a maternal effect. Gug1757 dominantly enhances the segmentation defects seen in ftz5/ftz13 embryos at 27.5oC; 89.7% of the embryos have segment defects and 55.1% have at least 3 ftz-dependent segments affected. Gug1757/+ enhances the transformation of segments A5 to A4, A6 to A5 and A7 to A6 seen in Df(3R)P9/+ males. The weak transformation of haltere to wing seen in Ubx1/+ and Df(3R)P9/+ adults is strongly enhanced by Gug1757/+; haltere size and the number of marginal bristles are increased. The mutant arista phenotype seen in AntpNs/+ adults is partially suppressed if they are also heterozygous for Gug1757 (26% of flies have normal arista development). The reduction in the number of sex comb teeth on the first leg seen in Df(3R)Scr/+ males is enhanced by heterozygosity for Gug1757. Gug1757/+ enhances the frequency of transformation of haltere to wing seen in Df(3L)brm11/+ flies. The transformation of second leg to first leg seen in Pcl1/Pcl4 males is strongly suppressed by heterozygosity for Gug1757.