Answer:
this is not the real answer just conjecture human being did not develop altruism
Chromosomes are the rod-shaped portion of DNA
<span>The answer is "Aggression and competition".
Sociobiology, the deliberate investigation of the organic premise of social conduct. The term sociobiology was promoted by the American researcher Edward O. Wilson in his book Sociobiology: The New Synthesis (1975). Sociobiology endeavors to comprehend and clarify creature (and human) social conduct in the light of normal choice and other natural procedures.
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Language is both a system of communication between individuals and a social phenomenon