I want to know the answer to the following question:
According to the American Journal of Human Genetics, what percentage of modern Iberian population has Sephardic Jewish ancestry?
All the background I'm provided with is that "The history of antisemitism includes the First Crusade which resulted in the massacre of Jews; the Spanish Inquisition (led by Tomás de Torquemada) and the Portuguese Inquisition, with their persecution and autos-da-fé against the New Christians and Marrano Jews; the Bohdan Chmielnicki Cossack massacres in Ukraine; the Pogroms backed by the Russian Tsars; as well as expulsions from Spain, Portugal, England, France, Germany, and other countries in which the Jews had settled.". Is that enough to answer the question?
Answer: no