mas locus is 500bp upstream of the P{white-un1} insertion.
Gustatory behaviour: reduced sensitivity to sucrose. Reduced feeding is due to reduced performance of the gustatory circuits, not a disinclination to feed as demonstrated by the proboscis extension reflex. Fails to respond to low concentrations of NaCl but rejection of high concentrations of NaCl and KCl is not significantly different from wild-type; defect in the assessment of salt concentration.
Defective chemosensory perception in third instar larvae and adults.
"FBti0003614 == FBti0001332 == FBti0001609 == FBti0003050 == P{wF}masP" was stated as revision.
A revertant caused by precise excision of the P-element has been isolated.
Excision lines show a complete reversion to the wildtype.