Homozygous larvae are sensitive to X rays, UV light, formaldehyde, nitrogen mustard and methyl methanesulfonate. Homozygous females have reduced reproductive capacity, which can be partially rescued when homozygous oocytes are fertilised by wild-type sperm.
Larval survival hypersensitive to exposure to methyl methanesulfonate, nitrogen mustard, formaldehyde, ultraviolet light and X rays. Fecundity of homozygous females reduced, although partial rescue effected by fertilization with sperm carrying mus202+. X-chromosome disjunction regular; slight increase in the number of fourth-chromosome exceptions noted.
Recovered as a methyl methanesulfonate sensitive mutant.