Complex sentence: One archaeological examination judged Shetland cattle to be closest of all the native breeds to these ancient wild cattle, though whether this demonstrates more Auroch blood in this breed compared to others or the genetic purity of Shetland cattle is not clear.
Split into simpler sentences: One archaeological examination judged Shetland cattle to be closest of all the native breeds to these ancient wild cattle. However, whether this demonstrates more Auroch blood in this breed compared to others or the genetic purity of Shetland cattle is not clear.