(A) Scheme of the 475-bp first intron of a hypothetical gene (31788 EID identifier) from Chromosome Y (locus NT_011903) and the 469-bp tenth intron of a computer-predicted gene (31777 EID identifier) from Chromosome Y (locus NT_011896) coding the hypothetical protein (XP_067077) similar to transcript Y7. Homologous regions in the middle of these introns are shown as thick lines. (B) BLAST2.0 alignment of part of the first intron of a hypothetical gene (31788 EID identifier) and part of the tenth intron of a computer-predicted gene (31777 EID identifier).