Accepted_test

To date, several genome assemblies of reindeer R. tarandus are available in open databases, including one at the chromosome level. These studies examined species-specific genes, including those which are rapidly changing and with overrepresented gene ontologies. About 38% of the reindeer genome was repetitive sequences, but differences between individuals from different populations have not been the subject of genomic studies. The fraction of repeated sequences in the genome can differ drastically between subspecies of the same species of ungulates and these differences can lead to adaptation and correlate with economically significant traits of domesticated animals. In present work, we compared two genomes of wild and two genomes of domestic reindeer on prevalence of repetitive elements and, in particular, the copy number of LINE retrotransposons.

We have annotated repeat sequences in genomes of two wild deer from the Magadan region and two domestic deer from the Murmansk region. Wild deer have higher copy numbers of BovB LINE retrotransposon from several families and also have greater intercopy variability. As has been shown in other work on domestication and local adaptation in mammals LINEs can change the pattern of variation for subsequent selection, we are planning to expand the material on several populations with lower sequencing depth in the future.