Jews were considered and still are considered good with their brains.
Russians are too considered good with their brain, many successful american companies being the mastermind of Russian immigrants.
Now we're talking about Indian and Chinese scientist.
Does heredity have an effect on the brain?
What do you mean "good with the brain" Are you talking about intelligence? IQ? G-factor? Earnings? Nobel prize winners?
Elaborate and I can help answer the question.