Wow!! very interesting. I think also basques are noted for a high concentration of lefties, also the rh- factor are notable in some populations like basques. I think I heard something about Ashkenazi Jews having an abundance of RH- blood type (yes it does run in my family)- Ive wondered if that is a gender linked trait (my mother had it, I have it, so does my daughter. My son does not.) My mother could not have any children after me (go figure-they broke the mold- hee hee).

I can only say some very naughty things in Hebrew-courtesy of my friends of course. I can speak more sign language than Hebrew or Polish (my husband's family are polish and german). I wish I were fluent-but languages are very hard for me to learn. I can get by with sign language and speak very broken French. C'est la vie!!
H