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One way to determine the contribution of genes and environment to a trait is to study twins . In one kind of study, identical twins reared apart are compared to randomly selected pairs of people. The twins share identical genes, but different family environments. In another kind of twin study, identical twins reared together (who share family environment and genes) are compared to fraternal twins reared together (who also share family environment but only share half their genes). Another condition that permits the disassociation of genes and environment is adoption . In one kind of adoption study , biological siblings reared together (who share the same family environment and half their genes) are compared to adoptive siblings (who share their family environment but none of their genes).
Fußpflegestudio D. Leberecht
Darler Heide 56
The Millennial Generation Holds the Future of the Outdoor Economy
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