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- #401
No, you are trying to diminish the role that genetics play In how intelligent one is. The fact is that intelligence Is primarily genetic but can be nurtured to some extent by environment.You are over simplifying it. Eye color and others are very simple genetic traits influenced by only one or a few genes. Intelligence and personality traits are much more complex and more difficult to separate from environmental influences. They are influenced by genetics not caused by genetics.
As far as personality, differences can be seen in babies by the first year - and within the same family. One is more outgoing; another is more shy. One is more determined to pull herself up by the crib rim into a standing position; another is content to just lay there. One says her first word at age 9 months; her sister doesn’t speak at all until 11 months. These are all innate.