Were they the same founding population, present earlier than the Clovis horizon but continuous with the people who eventually developed Clovis technology?

Or were there multiple migrations, multiple founding populations, some of which left little or no genetic trace in modern Indigenous populations?

The ancient genomic data from the Americas has gradually suggested a complex answer.

Most modern Native American populations appear to descend from a founding population that entered the Americas from Asia, with the Anzick-1 genome fitting within the range of that founding population.

But there are also signals in the genomes of some Amazonian and other South American Indigenous peoples of a relationship to populations from Southeast Asia or the Pacific that is not found in most other Native American groups — a signal sometimes called the “Population Y” or “Australasian” signal, whose origin and timing remain actively debated.