Transgenic construct used to study the evolutionary conservation of epigenetic mechanisms. It contains (3' to 5'): an FRT cassette containing seven tandem repeats of a 853bp sequence found in the paramutation control region of the Zea mays b1 locus, an Hsp70 promoter upstream of the w cDNA, an Hsp70 promoter upstream of EGFP.
Contains an Scer\FRT cassette containing 7 tandem copies of the 853bp Zzzz\b1-RPT repeated sequence which is found in the paramutation control region of the b1 gene, followed by an Hsp70 promoter driving w expression and an Hsp70 promoter driving expression of the EGFP form of Avic\GFP.