I don't think taste is genetic at all, a case of nurture vs nature. Some people who were raised to dislike some flavors will always hate them, on the other hand others will love them. Some who were raised to eat only 5 things their entire lives won't venture out there, others will.
Have to politely disagree on this point. I was raised by vegetable eating parents, my sisters and brother all like the same veggies as my parents. I do not like the same veggies. Especially how some were overcooked, i.e. Broccoli, Cauliflower, Brussels Sprouts, Cabbage. At this point I can tolerate Broccoli and Cabbage...raw or very lightly steamed.
I am mostly meat and starchy veg/pasta/rice oriented and I was not raised that way. And, I am the one that weighs the least...