I am currently working on a certain gene. I was looking for it in pigs among other species. In all the species investigated, I found a single copy. However, when I inspected the pigs genome,
I found two identical copies that, although have different genes accession numbers(XP_xx11, XP_xx2) , and appear in two different loci (loci 1, loci 2) , their nucleotide sequences are identical. Would that suggest that the two genes are really identical ( two copies of the same gene ) or that could be a sequencing error?