Admixture in The Philippines
Historically, admixture has been an ever present and pervading phenomenon in the Philippines. The Philippines was originally settled by Australoid peoples called Negritos which now form the country's aboriginal community. Admixture occurred between this earlier group and the mainstream Malayo-Polynesian population.
There has been Indian migration to and influence in the Philippines since the precolonial era. About 25% of the words in the Tagalog language are Sanskrit terms and about 5% of the country's population possess Indian ancestry from antiquity. There has been a Chinese presence in the Philippines since the 9th century. However, large-scale migrations of Chinese to the Philippines only started during the Spanish colonial era, when the world market was opened to the Philippines. It is estimated that among Filipinos, 10%–20% have some Chinese ancestry and 1.5% are "full-blooded" Chinese.
According to the American anthropologist Dr. H. Otley Beyer, the ancestry of Filipinos is 2% Arab. This dates back to when Arab traders intermarried with the local Malay Filipina female populations during the pre-Spanish history of the Philippines. A recent genetic study by Stanford University indicates that at least 3.6% of the population are European or of part European descent from both Spanish and United States colonization.