Use Epistasis Variance Share when you need to express the epistatic variance component as a percentage of the total genetic variance. Enter Total genetic variance and Epistatic variance using the definitions and units below so the result can be reproduced.

Total genetic variance

A finite measured or assumed value greater than or equal to 0.

Epistatic variance

A finite measured or assumed value greater than or equal to 0.

The published tool contract uses this rule: Express the epistatic variance component as a percentage of the total genetic variance.^[1]

Epistasis share

The calculated epistasis share in %.

A ratio or percentage can conceal the scale of its numerator and denominator and becomes sensitive to measurement error when the denominator is small.

Retain the original Total genetic variance and Epistatic variance values and their units alongside the result. Dominance Variance Share is useful when you instead need to express the dominance variance component as a percentage of the total genetic variance. Additive Variance Component provides another view by helping you derive the additive genetic variance by subtracting dominance and epistatic components from the total genetic variance.

• Dominance Variance Share

  Express the dominance variance component as a percentage of the total genetic variance.

• Additive Variance Component

  Derive the additive genetic variance by subtracting dominance and epistatic components from the total genetic variance.

• Drift Variance

  Compute the expected one-generation variance in allele frequency under diploid Wright-Fisher drift: p × (1 - p) / (2Ne), where Ne is the effective number of breeding individuals.