A group of researchers in the United States and Ecuador analyzed DNA from two communities who trace back to Spanish colonial times: one in the San Luis Valley of southern Colorado and northern New Mexico, which includes Conjehos County, and one in the Loja Province of southern Ecuador.

The study found “observable Sephardic ancestry” in both communities and calculated Jewish ancestry among the Lojanos at about 5 to 10 percent and among the Spanish Americans, also called Hispanos, at about 1 to 5 percent.

“This study provides firmer evidence for what people have been conjecturing for up to 20 years now,” said the study’s director, Dr. Harry Ostrer, director of genetics and genomic testing at Montefiore Hospital of the Albert Einstein College of Medicine in New York.

Over the past several decades, scholars have been pursuing stories like Valdez’s and claim to have found remnants of Crypto-Jewish practices in communities in the U.S. Southwest and Latin America. Some Hispanos and Latin Americans also have come forward to claim a Crypto-Jewish past, with a small number embracing a Jewish identity outright.

“The ancestry is really dispersed throughout the communities,” Ostrer said of his findings, which also concluded that along the maternal line, Native American ancestry is as high as 30 to 40 percent.

http://www.jta.org/news/article/2011/09/28/3089635/new-genetic-evidence-...

complete story