Figure 3.—
Clustering of genes showing YRV along the euchromatic portion of the X chromosome in an Indian genetic background (top), a French genetic background (middle), or a B4361 genetic background (bottom). Solid lines indicate observed density of genes around a 2-Mb sliding window (step size 1 Mb). Shaded lines indicate 95% confidence intervals. A schematic X chromosome is drawn at the top left with the shaded area representing euchromatin and the solid area representing heterochromatin. The solid knob at the right represents the X chromosome centromere. Columns represent genes for which males possessing YF showed enhanced expression over males possessing YI (YF > YI) or vice versa (YI > YF). An asterisk denotes a chromosomal segment containing significantly more genes showing Y-linked regulation than expected by chance.