cuticle & macrochaeta | somatic clone
Lack of external bristle structures are seen in mam2 somatic clones. they are correlated with a loss of internal cell types: typically, only solitary neurons are observed instead of neural hypertrophy or the wild-type thecogen/neuron pairs.
Embryonic CNS exhibits moderate disturbances and larval exhibit moderate cuticle loss.
Instead of forming distinct invagination folds, the mam mutant stomodeal nervous system anlage invaginates en masse.
Defects in neuroblasts, sensillum precursors, sensory neurons, peripheral glial cells, oenocytes, optic lobe, somatogastric nervous system, salivary gland, Malpighian tubules, trachea, somatic musculature and cardioblasts. Foregut, endoderm and larval midgut are wild type.
Homozygous clones in the eye have a severely disturbed ommatidial pattern, visible as a scar in the eye surface. Ommatidia are larger than wild-type and interommatidial bristles are missing. Each ommatidium contains more retinula cells and fewer pigment cells than wild-type. Each ommatidium contains more receptor cells than normal, and may contain up to 13 receptor cells. Homozygous clones in the cuticle lack all bristles.
Intermediate embryonic neurogenic phenotype. A segmented plate of dorsal cuticle is connected by means of two epidermal bridges to the remains of the cephalic cuticle. Posterior spiracles are still evident.
stronger allele
mam2/mam[+] is an enhancer of visible phenotype of Caf1-105NIG.12892R, Scer\GAL4ey.PH
mam2/mam[+] is an enhancer of visible phenotype of armS44Y.GMR
mam2/mam[+] is an enhancer of visible phenotype of armS56F.GMR
mam2/mam[+] is a suppressor of partially lethal - majority die phenotype of Hsap\FOXO1::Hsap\PAX7UAS.cGa, Scer\GAL4Mhc.PW
mam2/mam[+] is a suppressor | partially of visible | heat sensitive phenotype of Dcr-2UAS.cDa, EogtGD5084, Scer\GAL4en.PU
mam2/mam[+] is an enhancer of wing margin phenotype of N1
mam2/mam[+] is an enhancer of eye phenotype of Caf1-105NIG.12892R, Scer\GAL4ey.PH
mam2/mam[+] is an enhancer of eye phenotype of armS44Y.GMR
mam2/mam[+] is an enhancer of eye phenotype of armS56F.GMR
mam2/mam[+] is a suppressor | partially of wing blade posterior compartment | heat sensitive phenotype of Dcr-2UAS.cDa, EogtGD5084, Scer\GAL4en.PU
The wing blistering phenotype seen in the posterior compartment of wings in flies expressing EogtGD5084 under the control of Scer\GAL4en.PU in the presence of Dcr-2Scer\UAS.cDa is dominantly partially suppressed if the flies are also heterozygous for mam2.
One copy of mam2 enhances the small eye phenotype seen when Caf1-105NIG.12892R is expressed under the control of Scer\GAL4ey.PH.
mam2/+ enhances the armS44Y.GMR and armS56F.GMR eye phenotypes.
Complements: Lack11012b.