amorphic allele - genetic evidence
Point mutation.
lethal (with brrbp-2)
lethal (with Df(1)br25)
lethal - all die before end of larval stage | recessive
some die during larval stage | recessive
maxillary palp bristle (with brrbp-2)
Affects female fertility.
Late third instar larvae die at puff stage 1.
brrbp-2/brnpr-5 combination is lethal, rare adult escapers show a reduction of the bristle number on the palpus. Heterozygotes with Df(1)br25 are completely lethal.