Misreading Heritability
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
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It is an error to read heritability as the degree to which a trait is fixed in an individual.
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Height is highly heritable, and average height still rose sharply within populations as nutrition improved.
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High heritability does not mean unchangeable, and low heritability does not mean easily changed.