Figure 6

Comparison of standardised female and male interval distances of LG1 and LG2 revealing highly variable sex-specific recombination along both linkage groups. Regression analysis was performed by visually determining breakpoints (dashed lines) and grouping data into three slopes, left, middle and right. The male map is compressed near the centromeres and expanded near the telomeres, and the opposite was observed for the female map. The average slope of the lines in the two middle sections (centromeric) is 0.07 (±0.02) and is significantly different from 1 (P < 0.05). The average male-to-female recombination ratio for the slopes near the centromere is 1:5.98, indicating a male "cold-spot" for recombination. The average slope of the lines near the telomeres are 4.29 (±0.56) for the left group and 5.20 (±3.06) for the right, and again are significantly different from 1 (P < 0.05).