Complex sentence: In 2010, a study found that there were 75 different gray wolf haplotypes that include 23 in Europe, 30 in Asia, 18 in North America, 3 in both Europe and Asia, and 1 in both Europe and North America.
Split into simpler sentences: In 2010, a study found that there were 75 different gray wolf haplotypes. These include 23 in Europe, 30 in Asia, 18 in North America, 3 in both Europe and Asia, and 1 in both Europe and North America.