Females produce embryos with reduced head structures. In the most extreme case double abdomen (or bicaudal embryos) develop in which ectopic posterior structures replace anterior structures.
Bicaudal phenotype: lack anterior structures and have two posterior ends. The posterior signal is localized to the anterior and posterior ends.
BicDD has partially lethal - majority die | embryonic stage phenotype, enhanceable by btz2
BicDD has partially lethal - majority die | embryonic stage phenotype, enhanceable by Khc8
BicDD, stauunspecified has partially lethal - majority die | embryonic stage phenotype, suppressible by ctpexc3
BicDD has partially lethal - majority die | embryonic stage phenotype, suppressible | partially by stauunspecified/ctpexc3
BicDD, stauunspecified has partially lethal - majority die | embryonic stage phenotype, suppressible by Lis-1G10.14
BicDD has partially lethal - majority die | embryonic stage phenotype, suppressible | partially by stauunspecified/Lis-1G10.14
BicDD, stauunspecified has partially lethal - majority die | embryonic stage phenotype, suppressible by egl3e
BicDD has partially lethal - majority die | embryonic stage phenotype, suppressible by egl3e/stauunspecified
BicDD, stauunspecified has partially lethal - majority die | embryonic stage phenotype, suppressible by Dhc64C4-19
BicDD has partially lethal - majority die | embryonic stage phenotype, suppressible by Dhc64C4-19/stauunspecified
BicDD, stauunspecified has partially lethal - majority die | embryonic stage phenotype
BicDD has embryonic/first instar larval cuticle phenotype, suppressible | partially by stauunspecified/ctpexc3
BicDD, stauunspecified has embryonic/first instar larval cuticle phenotype, suppressible by ctpexc3
BicDD stauunspecified / egl3e triple mutants exhibit a 46% hatch-rate, compared to BicDD stauunspecified double mutants, which exhibit a hatch-rate of 19%. This indicates suppression of the BicDD stauunspecified phenotype by egl3e.
BicDD stauunspecified/Dhc64C4-19 triple mutants exhibit a 39% hatch-rate, compared to BicDD stauunspecified double mutants, which exhibit a hatch-rate of 8%. This indicates suppression of the BicDD stauunspecified phenotype by Dhc64C4-19.
BicDD stauunspecified / ctpexc3 triple mutants exhibit a 0.7% hatch-rate, compared to 0.25% in BicDD stauunspecified mutants. This indicates a mild suppression of the BicDD stauunspecified by ctpexc3. Removing one copy of ctpexc3 suppresses the 'double abdomen' phenotype of BicDD stauunspecified and allows more wild-type cuticle to form. The percentage of embryos exhibiting a bicaudal phenotype decreases from 97% (BicDD stauunspecified) to 57% (BicDD stauunspecified/ctpexc3). This coincides with an increase in the number of asymmetric, headless and normal embryos.
BicDD/ctpexc3 double mutants exhibit a 39% hatch-rate, compared to 2% in BicDD mutants. This indicates suppression of the BicDD stauunspecified mutant phenotype by ctpexc3.
BicDD stauunspecified/Lis-1G10.14 triple mutants exhibit a 85% hatch-rate, compared to an 8% hatch-rate in BicDD stauunspecified control strains. This indicates suppression of the BicDD stauunspecified phenotype by Lis-1G10.14.
BicDD/btz2 double mutants exhibit a hatch-rate of 24%, compared to a hatch-rate of 60% in BicDD control strains. This decrease in hatch-rate indicates an enhancement of the BicDD phenotype by btz2.
BicDD/Khc8 double mutants exhibit a hatch-rate of 3%, compared to a hatch-rate of 16% in BicDD control strains. This decrease in hatch-rate indicates an enhancement of the BicDD phenotype by Khc8.