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Wednesday, September 15, 2010

"A classic example of gene-environment interaction is Tyron's (1942) artificial selection experiment on maze-running ability in rats. Tyron produced a remarkable difference in maze running ability in two selected lines after seven generations of selecting "bright" and "dull" lined by breeding the best and worst maze running rats. The difference between the lines was clearly genetic since offspring of the two lines were raised under identical typical lab conditions but performed very differently. This difference disappeared in a single generation, though, once those rats were raised in an enriched environment (Cooper & Zubek 1958) with more objects to explore and more social interaction. This result shows that maze running ability is the product of a gene-by-environment interaction, and the genetic effect can be overcome by environmental conditions."

Does human Intelligence adhere to a similar basis?

she's not here @

6:01 PM