A transient early-zygotic promoter (bnk) drives expression of O-fut1 lacking the 3' UTR, which prevents it from being silenced by O-fut1miRNA.bcd.T. This allele is used as an 'antidote' in the UD[MEL] system.
This allele is used as part of the UD[MEL] system. The U[DMEL] system utilizes two constructs, each consisting of a maternally expressed toxin and a zygotically expressed antidote. Each antidote is linked with a toxin whose activity it does not rescue (toxin A linked with antidote B and vice versa). As a result, the survival of embryos from mothers carrying one (UD[MEL-1]) or both (UD[MEL-1] and UD[MEL-2]) kinds of UD[MEL] chromosomes requires that they inherit the other (UD[MEL-2]) or both kinds of UD[MEL] chromosomes, respectively, in order to achieve zygotic rescue.
This allele is used as part of the UD[MEL] system. The U[DMEL] system utilizes two constructs, each consisting of a maternally expressed toxin and a zygotically expressed antidote. Each antidote is linked with a toxin whose activity it does not rescue (toxin A linked with antidote B and vice versa). As a result, the survival of embryos from mothers carrying one (UD[MEL-1]) or both (UD[MEL-1] and UD[MEL-2]) kinds of UD[MEL] chromosomes requires that they inherit the other (UD[MEL-2]) or both kinds of UD[MEL] chromosomes, respectively, in order to achieve zygotic rescue.