Figure 5.

A representation of expression levels along IRCS chromosomes where M. spretus segments were detected by analyzing the testis transcriptome for chromosomes 1, 2 and 3. Chromosome 2 is represented as a negative control (no M. spretus segment). The graphs display the chromosomal position (abscissa) against the number corresponding to the sum of the log₂ of the IRCS/B6 expression ratios in sliding windows of 50 genes (see Materials and methods). The horizontal lines represent a 1% probability of random occurrence estimated by one thousand random permutations of gene order, for each strain and each chromosome.