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| a biological approach that concerns the degree to which personality is inherited from parents and shared among biological relatives |
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| a biological approach that concerns the ways in which human personality (and other behavioral propensities) may have been inherited from our distant ancestors, and how these propensities were shaped over the generations by their consequences for survival and reproduction |
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| the notion that humanity could be improved through selective breeding; led to activities ranging from campaigns to keep "inferior" immigrants out of some countries to attempts to set up sperm banks stocked with deposits from winners of the Nobel Prize |
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| the use of specialized technology to produce a psychological as well as physical duplicate of a human being |
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| the observable traits of a person |
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| underlying genetic structure of a person |
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| one-egg or identical twins; twins derived from the splitting of a single fertilized ovum and therefore are genetically identical |
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| twins derived from two different eggs fertilized by two different sperm, often called fraternal twins.; they share about 50% of varying genes, same as siblings and parents |
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| a statistic that reflects the percentage of the variance of a trait that is controlled by genetic factors; (MZr - DZr) x 2; averages to .40 |
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| in molecular behavioral genetics, the attempt to link genes to personality by comparing the DNA of people who score high and low on trait scales and behavioral measures |
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| the benefit individuals derive from increasing the survival of their relatives' offspring; the young of their relatives share some percentage of their genes and by helping them to survive they are increasing the opportunity for those genes to continue to be passed on |
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| what a person looks for in the opposite sex |
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| how individuals handle heterosexual relationships |
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| an approach to understanding the nature of humans by reducing them to the interactions of their parts, or to simpler or more fundamental things |
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| psychologist Daryl Bem's explanation for the interaction of biology and environment in determining a person's sexual orientation |
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