I think someone ditched BIO 101.
Every living thing is made of DNA.
In ref to some of your questions:
Smart people from poor uneducated people - this is because if the poor uneducated people had the privilege to get educated, they'd be smart too. Has nothing to do with DNA though.
I'm wondering if our DNA structure really plays a big major role in our success in our kids - no, DNA structure has nothing to do with success. It's environment.
Have we broken the chained of DNA with mass media to the point that it's randomized now? - no. Again, environment. But, by "randomized," maybe you're referring to survival of the fittest? If so, that would definitely be environment.
In the animal kingdom strenght, intelligence and feats always plays a major key role in it's evolution but when I look at the human race I cannot say the same thing. - why can't you say the same? In humans, our intelligence is in what we can do with our mind. I'd sure be surprised to find a lion building high rises, designing airplanes, and creating technology such as computers and ipads. Also, your statement once again is more about survival of the fittest.
Human example:
J. Doe is an intelligent nerd and likes Susie. Susie likes bad boy Tom, but like her parents, she makes good life choices and realizes that J. Doe is intelligent + he will likely make more money so she marries him instead of bad boy Tom. Susie and J. Doe have a baby. Their baby grows up to be extremely intelligent (from J. Doe's side) and makes great life choices (from Susie's side). Baby grows up and because of great life choices + intelligence, builds on that...their kids (or great great kids) become geniuses....an
d maybe one day builds a world on Mars away from the toxic that has permeated what was once Earth.
Same can be said about those who are just into looks. They'll have good looking but not so smart off springs. The goal is to create good looking smart off springs who will grow up to be good looking smart adults and carry that gene (where is that gene, you ask? It's in DNA). That is human nature. It's always been that way. We are primitive that way.
My only thought is that I believe it is no longer DNA and traits that emerges but what we teach our offsprings when growing up. - Sorry, but you can never take DNA out of the picture. We can teach our offsprings but we have to be in the right environment for it to work. In the mountains of Laos, your best bet is teaching your kids how to farm the best they can so that no one will starve. In Russia and N. Korea (and similar countries)....don't even dream. In America (and similar countries), yes the opportunities are bountiful.