Our varna is the same as we think in the same way. Varna isnt based on birth. Having said that genes do have a say. Besides that the bringing up.
Ok..so you do see that though our jati differs yet there is similarity in how we think.
Doesnt this already show anyone is capable of anything?
Sravna, genes and upbringing do shape our thinking and tendencies, our gunas etc..that I dont deny as most diseases too have a genetic tendency.
So one might ask "if diseases have a genetic transmission cant our intelligence too be shaped by our genetics?"
My answer is Yes.
But at the same time we are not all just one dimensional.
We have no idea which genes will express itself in which time of our life.
A person who is " imbalanced" in intelligence at the age of 20 might become " balanced" at the age of 50.
Deep down inside we all have the same Atma which is beyond any limitations..if anyone gets a glimpse of it by grace of God or by spiritual practices,eventually they strike balance in thought,word and deed.
At the same time, someone who is " balanced" from young could become " imbalance" if he gets an addiction or faces circumstances.
At any time anyones scales can tilt.
Also we are just not all physical genes ..as you know we all have had many births and each life karmic imprints and vasanas are in our subtle body.
We could have been any varna, jati , race or life form in any life..all those memories are in us...we do not really know which memory functions at any given time.
So what are we?
Everything? Everywhere? All at once?
Well, may be..we can be any combination but the name of the game is transcending all those memories.
So why do you swim around the shell of our physical genes?
Why not dive deep to get the pearl within us which transcends even the best of brains of a Nobel Laureate?