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Recombinational distances (in Kosambi centimorgans) between genetic markers in hybrids of D. pseudoobscura and D. persimilis. The circles indicate positions of large inversions that differentiate the strains used. Also indicated are positions of genomic segments introgressed from D. persimilis into D. pseudoobscura (bars right of the chromosomes) and the positions of loci associated with species discrimination by backcross females (asterisks right of the chromosomes).
