抄録
The inheritance of BHC-resistance in the Indian housefly, Musca domestica nebulo was studied by making reciprocal crosses between individual as well as groups of flies of a BHC-resistant and a susceptible strain of the subspecies. The F1 generation was less resistant than the resistant parents but far more resistant than the normal ones and there was no segregation in the F2 generation. The F1 hybrids were also back crossed with susceptible parents but no evidence for a monofactorial origin of resistance could be found.
The validity of the results when checked by the formula of Castle (1921a, 1921b) led to the conclusion that BHC in M. d. nebulo is polygenic in origin.
