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Re:Teens Aren’t Partying Anymore by rcacho on Wednesday January 03, 2018 @01:05PM (#16063320)
Heritability refers to trait variation due to genetic variation within a population.

This is different than the amount genetics actually contributes to a trait.

While you are controlling for environmental factors in heritability studies you are still referring to a specific population. It can be the case that two identical genotypes across two different populations show two different phenotypes.

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