
Copy number evolution of Sly and Slx. (A) The phylogenetic tree of Sly/Slx genes on the mouse reference genome, GRCm38. Bootstrap values are described at each node. (B) Estimated copy numbers of Sly and Slx for each sample. Different colors represent the copy numbers of different clusters. The samples were aligned according to the subspecies group of Y Chromosome haplotypes first and then sorted ascendingly by the total copy numbers of Sly within the groups.











