According to a new study, people who reached America in the beginning were having Siberian origin. They reached America approximately 23,000 years ago, during the last Ice Age, according to the study. It is said that they went to the north, after arriving in Alaska, probably for thousands of years, prior to residing throughout North and South America. The study came up with these revelations on the basis of genomic analysis.

The findings are opposite to the popular belief that Polynesians or Europeans played a role in the genetic inheritance of Native Americans. It has been revealed in the study that the first people to arrive in the Americas reached using a land bridge between Siberia and Alaska.

According to a study author Yun Song, associate professor at University of California, Berkeley, "There is some uncertainty in the dates of the migration and the divergence between the northern and southern Amerindian populations. But as we get more ancient genomes sequenced, we will be able to put more precise dates on the times of migration".

The analysis utilized the most inclusive genetic data set from Native Americans up to now. It was conducted by making use of three different statistical models. The data was containing the sequenced genomes of a number of living Native Americans, people from around the Pacific Ocean and Siberians, in addition to the genomes of ancient individuals from North and South America.

It has been concluded by the international team that between 11,500 and 14,500 years ago, the northern and southern Native American populations diverged. The findings will be published in the journal Science.