Fig. 8

Suggested evolution of bovine chromosome 1 ancestral ortholog in Cervidae and Bovidae. Relative to bovine chromosome 1 and its caprine ortholog, three events appear to have been passed on to R. tarandus and O. hemionus. First, fission of the common ancestor’s bovine chromosome 1 ortholog gave rise to a short acrocentric chromosome (containing R. tarandus scaffold 7, green) and a longer one (containing scaffolds 13, 20 and 56, yellow, blue, red). A translocation then occurred within the distal portion of the longer one, near the centromere. The order of these two events has not been confirmed. Finally, a pericentric inversion of the proximal part of the longer chromosome occurred, leading to a submetacentric configuration in the genera Odocoileus and Rangifer