Concept 55 - Concept 51.2 Many behaviors have a strong...

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Concept 51.2 Many behaviors have a strong genetic component Behavior results from both genes and environmental factors. Behavioral traits, like other aspects of a phenotype, are the result of complex interactions  between genetic and environmental factors. In biology, the nature-versus-nurture issue is not about whether genes or environment  influence behavior, but about how both are involved. All behaviors are affected by both genes and environment. Behavior can be viewed in terms of the norm of reaction. We can measure the behavioral phenotypes for a particular genotype that develop in a range  of environments. In some cases, the behavior is variable, depending on environmental experience. In other cases, nearly all individuals in the population exhibit identical behavior, despite  internal and external environmental differences during development and throughout  life.
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