Jennifer Raff, an Assistant Professor in the anthropology department at the University of Kansas, said the geneticist who analyzed Warren's DNA is a prominent scholar in the field. Raff was able to trace Warren's chromosomes segments back to a Native American ancestor about six to ten generations ago.
Raff used a process known as chromones mappings. Warren released her DNA test results to the Boston Globe, which reported that the test shows that there is substantial evidence she had a Native American ancestor. Trump challenged her to take this DNA test and said he would give her one million dollars to give to her favorite charity.