Homozygotes look phenotypically normal and have no obvious homeotic phenotypes. Homozygous females or females containing homozygous germline clones lay eggs which look normal and are fertilised, but fail to develop.
pho1, phol81A has lethal | larval stage phenotype
pho1, phol81A has imaginal disc phenotype
pho1, phol81A has larval brain phenotype
pho1, phol81A has polytene chromosome phenotype