Alignment of the AluYh7, AluYh3a1 and AluYh3a3 consensus sequences with AluY. Diagnostic mutations from AluY can be seen for each subfamily. Mutations from AluY shared by all three subfamilies on the AluYh lineage are shown in black boxes. The further mutations accumulated by the AluYh7 subfamily are shown in blue boxes. The mutation possessed by AluYh3a1 and AluYh3a3 is shown in a red box, and the further two mutations in AluYh3a3 are shown in green boxes.