Subject: Components of stocks from the Michelson lab Personal communication from: Bloomington Drosophila Stock Center Subject: Components of stocks from the Michelson lab These insertions are described, named and sequence-mapped in FBrf0152364, Halfon et al., genesis 2002. The cytology below is inferred from the insertion site given in the publication. Enhanced GFP insertions P{UAS-2xEGFP}AH2 28F3-5 P{UAS-2xEGFP}AH3 70D Enhanced YFP insertions P{UAS-2xEYFP}AX 10B P{UAS-2xEYFP}AH2 58D8 P{UAS-2xEYFP}AH3 68C These insertions are described but not named in FBrf0152364, Halfon et al., genesis 2002. They were generated by hopping an unnamed 2nd chromosome insertion of P{GAL4-twi.G} described in FBrf0059139, Greig and Akam, Nature 1993. They map to the chromosome indicated. The insertion identifiers are those used in the Bloomington stock list. Twist-GAL4 insertions P{GAL4-twi.G}2.2 2- P{GAL4-twi.G}2.3 3- These balancers expressing enhanced GFP from embryonic stage 8 through adult are described in FBrf0152364, Halfon et al., genesis 2002. They were generated by hopping P{UAS-2xEGFP}AH2 into CyO and TM3 chromosomes. The symbol used by the donor and the balancer short genotype used in the Bloomington stock list are shown. CTG CyO, P{w+mC=GAL4-twi.G}2.2, P{UAS-2xEGFP}AH2.2 TTG TM3, P{w+mC=GAL4-twi.G}2.3, P{UAS-2xEGFP}AH2.3, Sb1 Ser1 An additional balancer was mentioned by not further described in FBrf0152364, Halfon et al., genesis 2002. It carries an otherwise undescribed insertion of P{UAS-2xEGFP} on chromosome 1 that we have called AX, in keeping with other names in this set. The identify of the P{GAL4-twi.G} insertion is our best guess. FM7c, P{w+mC=GAL4-twi.G}108.4, P{UAS-2xEGFP}AX