Suppose that a team or researchers analyzes the heritability of SAT scores and a

CSDCUO

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10 years ago

Suppose that a team or researchers analyzes the heritability of SAT scores and assigns a heritability of 0.75 for this skill. The team also determines that a certain ethnic group has a heritability value that is 0.12 lower when compared to that of other ethnic groups. The group draws the conclusion that there must be a genetic explanation for the differences in scores. Why is this an invalid conclusion?

Source Lynn Jorde, John Carey, and Michael Bamshad. 2010. Medical Genetics. 4th edition. Mosby. ISBN: 978-0-323-05373-0

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bolbol

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Staff Member

3 years ago

Comparing the heritability between different ethnic groups would be similar to comparing the heritability of the color red in apples and oranges. Heritability is measured as the percent a trait can be explained by genes within a given population. Heritability of the color red would certainly be different than heritability of the color orange because they are a different population, meaning it would be pointless to compare their heritability.

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