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Broad-Sense Heritability H² versus Narrow-Sense Heritability h²

One distinction, taught once. H^2 counts all genetic variance including dominance and interaction; h^2 counts only the additive part. The seed study's 17% is an additive quantity, so the student has to know which of the two numbers is being quoted before they can compare it to anything from a twin study.

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Why can quoting \( H^{2} \) from one study beside \( h^{2} \) from another manufacture a false contradiction?

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Broad-Sense Heritability versus Narrow-Sense Heritability in Quantitative Genetics

Heritability is the proportion of phenotypic variance in a trait attributable to genetic variance, formalized as broad-sense heritability (H² = total genetic variance / total phenotypic variance) and…

Broad-Sense Heritability H2 versus Narrow-Sense Heritability h2

Questions this Concept answers

Broad-Sense Heritability versus Narrow-Sense Heritability in Quantitative Genetics

Broad-Sense Heritability H² versus Narrow-Sense Heritability h²