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    Quantitative genetics legitimately partitions phenotypic ... — Carmelics
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    Challenges→Traits cannot be attributed primarily to genes or primarily to environment in any fixed proportion

    Quantitative genetics legitimately partitions phenotypic variance into heritable and environmental components via heritability coefficients (h²).

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    Reasons For

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    • 1.h² successfully predicts response to selection in controlled breeding experiments across diverse organisms with high accuracy.
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    • 2.Partitioning variance into additive genetic and environmental components enables quantitative prediction of trait inheritance in populations.
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    • 3.h² provides operational utility for agriculture, medicine, and evolutionary biology despite philosophical limitations about causation.
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    Reasons Against

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    • 1.h² is population-specific and environment-specific; same trait shows different h² values across contexts, undermining universal claims.
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    • 2.Gene-environment interactions and correlations mean variance components cannot be cleanly separated; h² obscures rather than clarifies causation.
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    • 3.h² describes statistical decomposition of variance, not biological mechanisms; it answers 'how much variation?' not 'how does inheritance work?'
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    Related

    Gene-environment interactions and correlations mean variance components cannot b...Partitioning variance into additive genetic and environmental components enables...Traits cannot be attributed primarily to genes or primarily to environment in an...h² describes statistical decomposition of variance, not biological mechanisms; i...
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    h² is population-specific and environment-specific; same trait shows different h...h² provides operational utility for agriculture, medicine, and evolutionary biol...h² successfully predicts response to selection in controlled breeding experiment...

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