Homozygous viable. Homozygous germline clones display maternal effect phenotype. Embryos derived from heterozygous mothers exhibit a brownish eye colour and the larval Malpighian tubules can be short, bloated and irregularly formed.
Eye color complementation group: IV
Oliver, 1st Dec. 1930.
Xanthine dehydrogenase (XDH) and aldehyde oxidase activity are undetectable in extracts of flies. Dithionite/sulfide treatment activates XDH levels to 95% of treated wild-type extracts.