When we are born, our eyes are not fully developed. We need to see the world in order to "fine-tune" our vision. We need to be exposed to horizontal lines, vertical lines, various shapes... Babies have a natural instinct to keenly observe the pattern in front of them when they are being held, and that pattern is nearly always a face!
Once the genes tune a part of the brain to recognize faces, the genes can then build other circuitry that depends on it... such as being cowed by a frown pattern, or being excited by a smile pattern.
So the genes don't have to specify everything in our mind, for those things to be innate. The genes can make certain assumptions about the environment, like a plant can make assumptions about its environment (the sun will rise, wiggling will usually help it get around obstacles, it will rain occasionally). Anything that's reasonable to expect in the environment is reasonable to be left out of the genes.
A young child who has one eye (but not both) closed for an extended period will have permanent problems with their vision. But it's reasonable to expect that this situation will not usually occur.
Someone with innate leadership ability simply has a cluster of motivations and emotions. They need to be tuned, in order for that person to be an affective leader. They are the basic building blocks for leadership. Some people don't have those basic building blocks, and so will not desire to become a leader ("I chose not to be a leader of my own free will," they may say) or will not have the ability to become a leader.
In order to develop leaders, first you need to assemble a group of people with the leadership genes. You don't develop leader's basic motivations and emotions... you tune the people who are already leaders.
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