Figure 3.

Analysis of the content of the introgressed Y chromosome. The plots show the number of normalized reads mapping to the A. gambiae Y chromosome reference loci calculated as log₁₀ transformed FPKM values for A^Y2 males on the x-axis compared to either wild-type A. gambiae males (A), wild-type A. arabiensis males (B), A. gambiae females (C) and wild-type A. arabiensis females (D) on the y-axis. The dashed linear regression line and associated r² coefficient indicate the best correlation in read counts of signature Y elements between A^Y2 and A. gambiae males.