There are two distinct genetically determined types of earwax: the wet type, which is dominant, and the dry type, which is recessive. While East Asians, Southeast Asians and Native Americans are more likely to have the dry type of cerumen (gray and flaky), African and European people are more likely to have the wet type (honey-brown, dark orange to dark-brown and moist). 30-50% of South Asians, Central Asians and Pacific Islanders have the dry type of cerumen. Cerumen type has been used by anthropologists to track human migratory patterns, such as those of the Inuit. In Japan, wet-type earwax is more prevalent among the Ainu, in contrast to that country's Yamato majority. The wet type earwax differs biochemically from the dry type mainly by its higher concentration of lipid and pigment ; for example the wet type is 50% lipid while the dry type is only 20%.