Why are traits inherited and not learned?

Answer 1

Physical traits like hair colour, tallness, the tendency to high blood pressure, Diabetes or certain cancers, and even some personality traits, are inherited because they are expressions of the chemistry of your body that are determined by the genes you received from your parents. THere is evidence that the tendency to chronic depression is inherited, as it is related to the chemistry of a person's brain, again: regulated by the genese in the nucleus of each cell.

Behavioural traits, like arrogance, humility, generosity, religious devotion, patriotism, diligence, kindness CAN be affected by one's internal chenistry, but for the most part are learned as a child either from the beaviour of one's family or peer group, or by the beaviour of the community around the developing child.

Inherited and learned traits are intertwined, though: the tendency to be depressed can be blunted by observing the ability of the people around the developing child to deal with their own internal demons. The natural tendency to be curious can be crushed by a monolithic education system that discourages innovation (I have issues....)