FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
Embryos exhibit gap defects.
fkhunspecified mutant embryos lack anal plates and Malpighian tubules, and have a forked head skeleton. They show homeotic transformation of the anterior head and posterior tail regions.
2 mutants are isolated.