[fanfan]

Demographers estimate that ninety-percent of the population (of Spain) has Jewish ancestors.

Really? I didn't know that.

There must be many Jewish people who have converted to Christianity or Judaism over the centuries.

[blam]

"Demographers estimate that ninety-percent of the population (of Spain) has Jewish ancestors."

Really? I didn't know that.

"There must be many Jewish people who have converted to Christianity or Judaism over the centuries."

I would look to the Moors as the largest 'outside' contributors of DNA in the Iberian area.