suggest two features of humans that are affected by both genes and variations
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Genes play a greater role in forming character traits -- such as self-control, decision making or sociability -- than was previously thought, new research suggests. A study of more than 800 sets of twins found that genetics were more influential in shaping key traits than a person's home environment and surroundings.
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Most of them. The “nature-nurture” dichotomy is merely a set-up for discussion. Neither extreme is applicable in most cases. It has easily become politicized, however, so be careful not to fall into either trap. Liberals tend to believe that all is accounted for by environment. And yet most liberals accept evolution as the explanation for human history. Ah, yes, but then there is that pesky double helix strand we call DNA in the works. So are humans something special? Conservatives tend to believe that all is accounted for by genetics and evolution (which they tend to believe is equivalent to competition and thus a justification for competition , war and capitalism). But then they refuse to accept evolution when it comes to humans, Neither have it correct in such a dichotomy. Both operate in humans. Both operate in every organism.
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