The growing proliferation of DNA and genealogical services have led to increased cataloging of DNA markers. Many Hispanics have taken these tests and as a consequence have discovered likely Jewish backgrounds. Most individuals who contact me regarding Crypto-Jewish identity have started from DNA inquiries. For an interesting article on the topic, see the article below from The Jewish Post.
Posted by Rabbi Juan Marcos Bejarano Gutierrez the director of the B’nei Anusim Center for Education. For a more complete review of Iberian Jewish history and the Crypto- Jewish Experience see The Rise of the Inquisition and Secret Jews: The Complex Identity of Crypto-Jews and Crypto-Judaism