Natural selection
Environment couples selection and heritability
Open access · cc by · source: Europe PMC
In Soay sheep, strong selection on birthweight occurs when heritability is lowest, limiting evolutionary response.
Key findings
Maternal genetic variance and selection differentials both depend on environment and covary negatively.
Methodology
Used random-regression animal models across years of varying neonatal mortality quality.
Limitations
Observational wild population; unmeasured confounders may remain.
How this study connects
Role on claims
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Maternal genetic variance and selection differentials both depend on environment and covary negatively.
Evidence for the claim as stated.
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