Pretty interesting stuff. I am A+ (German, English, Irish background), as are both my parents.
I am O+, English, Irish, Scots, the area of England that my family inhabited was a Saxon strong hold, Wessex. My dear ex was Lithuanian, had the Mongol spot, was also O+, most of my Lithuanian pals are B+, as are most Slavs, strange.
Let's see ~ with 8 Great Grandparents with A+ blood, odds are mine is A+. Must take a look someday!
I am B+ blood type like many other jews I have met. This I think proves that the jews belong to the fertile crescent. It is interesting to note the arabs in the region have a high prevalence to the African O blood type.