The cuticle occasionally has a dorsal hole in homozygous embryos. There are often fewer pericardial cells than in wild-type embryos, resulting in distinct gaps in the heart tube. The pericardial cells appear to dissociate randomly and the heart tube often appears to curve off towards the lateral side of the embryo.
Lethality occurs during third instar larval or pupal stages. Mutants do not show any visible disc abnormalities.
This allele was listed in the BDGP database as a lethal or sterile line during the period 1994-1999, but was discarded from the gene disruption project prior to the summary publication (FBrf0111489). Reasons for excluding lines from the collection described in FBrf0111489 include presence of more than one P insertion on the mutant chromosome, separation of lethality (or sterility) from the location of the insertion, and loss of lethality (or sterility) from the stock. Further information is available from http://www.fruitfly.org/bfd/ and from Dr. Spradling (spradling@mail1.ciwemb.edu).