FIG. 1.

Genetic arrangement of five independent transposons inserted into a single locus. A) Genetic arrangement of the red locus. Arrows indicate sites of magellan4 transposon insertions. B) Analysis for polycistronic red mRNA by reverse transcriptase PCR. Intergenic regions between each gene (represented by bars in panel A) were amplified either from genomic DNA (g) or cDNA generated using RNA isolated from vegetatively growing cells in the presence (+) or absence (−) of reverse transcriptase. S, DNA size standards.