Every Jewish person I have known has been very fair and most with blue eyes. I’m just curious if there has been any kind of study (if possible) to determine how much of their DNA goes back to the Middle East or are most of them mutts like the rest of us?
How many Jews do you know? That describes something like 5% of my family - all Ashkenazi Jews. Until the current generation, all have been from Ashkenazi on both sides.
Ashkenazi DNA has been fairly extensively studied and it’s actually one of the more cohesive genetic groups out there.
Lots more to read here - Genetic studies of Jews - Wikipedia
I realize that they all share common ancestry, but the passage from your second link helps me out or clouds it.
***Both the extent and location of the maternal ancestral deme from which the Ashkenazi Jewry arose remain obscure.
And yes most Jews I know which is plenty are normally fair, however it may just where I live.