ABSTRACT
Pairs of adult tobacco budworms that were either target site-sensitive or -resistant to pyrethroids were mated in an attempt to develop a target site resistant strain of this insect. During the course of this study, assumptions regarding the genetic nature of this mechanism were examined; specifically, that target site resistance was monogenic and that the inheritance of this mechanism was recessive. Preliminary results from a limited number of crosses between adults of known phenotype suggest that one or both of these assumptions is invalid.
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