Subject: Dp(4;3)f
Personal communication from: Kathy Matthews, Bloomington Drosophila Stock Center
Subject: Dp(4;3)f
Information communicated:
The aberration described as Tp(4;3)f is really Dp(4;3)f. The aberration was
originally described as a T(3;4) and was apparently renamed as a
transposition based on the cytology reported by Lewis (1956, DIS  30:130 ):
'Insertion of at least seven bands of chromosome four (bands not identified)
into 3L, probably just after 65D1-2.' Lewis did not, however, describe a
reciprocal 4th chromosome deficiency. The two extant stocks (Bloomington
numbers 894 & 895) came to us as Tp(4;3)f with a 3rd chromosome balancer
specified but no 4th chromosome homologue specified. I tested stock number
895 for the presence of the duplication and deficiency segregants and found
only the duplication.
The incorrect genotypic information has led to some confusion so I'll
summarize the complementation data for this duplication below. The
genotypes tested by Rui Sousa-Neves (see FBrf0112252 & FBrf0125105) and
me were as follows:
Dp(4;3)f/+; svspa-1
The duplication complements svspa-1 (this genotype has a wild-
type eye); Sousa-Neves (FBrf0112252) & Matthews (this pc)
Dp(4;3)f/+; T(1;4)scH/pho1
The duplication fails to complement the lethality of T(1;4)scH/
pho1 (this genotype is lethal); Sousa-Neves (FBrf0125105;
the genotype tested was clarified in discussion with me)
Dp(4;3)f/+; In(4)ciD, ciD panciD/pan3
The duplication fails to complement panciD/pan3 (this
genotype is lethal); Sousa-Neves (FBrf0112252)
Thus, Dp(4;3)f is sv+, pho- and pan-. It is not known whether it is
ci+ or ci-. Tp(4;3)f and Df(4;3)f almost certainly do not exist.