The discovery of epigenetics, gene silencing, duons, ultrastructure of the genome, transposons, retrotransposins,oncogenes, exons, introns, promotor genes, coding genetic areas (formerly known as “junk DNA” has pretty much destroyed the simplistic concept of the genome being a relatively static complex double helical arrangement of genetic information. Not sure if two organism sharing a similar genetic structure is indicative of common ancestry. It could be that in order to survive, each organism needs that structure. After all, genes from plants, bacteria, viruses can invade and settle into the human genome, which really mucks up the picture. IMHO.
ERV evidence are not about genetic structures. Read up before you attempt to comment.
Not sure if two organism sharing a similar genetic structure is indicative of common ancestry.Correlation is not causation.