Figure 3.

Summary of homolog/homoeolog effects on MAT∷URA3-arg4-nsp × ura3:URA3-arg4-bgl recombination. Hatched bars, uncorrected frequencies of ARG4 spores; open bars, frequencies corrected for loss of recombinants associated with a crossover, assuming that half of all ARG4 recombinants are crossover associated (22). The MAT∷URA3-arg4 and ura3∷URA3-arg4 inserts face in opposite directions relative to their respective centromeres; crossover-associated recombinants will reside on lethal rearrangements. For purposes of comparison, frequencies of allelic recombination at two insert loci are presented (40, 53).