Gibson, J; Reed, D; Wilks, Ann
Trans effects at the sn-glycerol-3-phosphate dehydrogenase locus (Gpdh) of Drosophila melanogaster give rise to an increase in GPDH activity and mRNA from the wild-type allele in heterozygotes with some low-activity alleles. Either the low-activity alleles that induce the effect have a defective P- element inserted between the promoter and a downstream intronic enhancer element or the promoter region is deleted. The trans effect is pairing dependent, characteristic of transvection at some other...[Show more]
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