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Darwin vs Hamilton

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Unit 12 Critical Thinking Assignment

While Darwin brought us the theory of evolution, William Hamilton contributed with significant views on such evolution through a genetic standpoint. More specifically, after lengthy research and important demonstrations Hamilton became one of the most important evolutionary theorists of the twentieth century through his concepts of kin selection and altruist behavior in nature. As he realized that the simplicity of natural selection could only be seen in an objective viewpoint, he began to search for further evidence of selection and evolution more subjectively until coming to the conclusion that evolution works through genes. Hamilton unveiled the behavioral pattern of altruism (sacrificing one’s life for the survival of others) in animals and came to the conclusion that such behavior in their species was, for the most part, due to gene propagation and it happened within members of a group that were closely related to one another. According to Hamilton, these genes that are passed on help determine altruistic behavior in future generations also. This type of natural behavior is known as kin selection “(acts of altruism performed by an individual that, while of no survival nor reproductive benefit to that individual, results in the passing on of the genes that caused the altruistic behavior.)”
Altruistic behavior in nature takes part in processes such as evolutionary fitness (determines how good organisms are at getting their genes into future generations) and individual or group selection (some individuals or groups specifically survive to reproduce certain genes that will increase in frequency in the next generations.) Its evolution can happen through processes of cooperative breeding, reciprocity (reciprocal altruism), and eusociality (one individual has the offspring while others divide to care for them).

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