Nei Genetic Distance
Compute Nei's standard genetic distance between two populations at a two-allele locus.
Description
Compute Nei's standard genetic distance between two populations at a two-allele locus.
Nei Genetic Distance is a focused biology tool that compute Nei's standard genetic distance between two populations at a two-allele locus. It calculates locally from the values you enter and exposes the result without changing the source observations.1
When to use Nei Genetic Distance
Use Nei Genetic Distance when you need to compute Nei's standard genetic distance between two populations at a two-allele locus. Enter Population X allele 1 frequency, Population X allele 2 frequency, Population Y allele 1 frequency, and Population Y allele 2 frequency using the definitions and units below so the result can be reproduced.
- Population X allele 1 frequency
- A finite measured or assumed value greater than or equal to 0.
- Population X allele 2 frequency
- A finite measured or assumed value greater than or equal to 0.
- Population Y allele 1 frequency
- A finite measured or assumed value greater than or equal to 0.
- Population Y allele 2 frequency
- A finite measured or assumed value greater than or equal to 0.
How Nei Genetic Distance calculates the result
The published tool contract uses this rule: Compute Nei's standard genetic distance between two populations at a two-allele locus.1
- Nei distance
- The calculated nei distance.
Limitations of Nei Genetic Distance
The calculation does not propagate measurement uncertainty, sampling error, or biological and chemical variability.
Alternative or Complementary measurements
Retain the original Population X allele 1 frequency, Population X allele 2 frequency, Population Y allele 1 frequency, and Population Y allele 2 frequency values and their units alongside the result. Additive Variance Component is useful when you instead need to derive the additive genetic variance by subtracting dominance and epistatic components from the total genetic variance. Drift Variance provides another view by helping you 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.
References
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Genetic distance — Wikipedia contributors
Similar or alternative tools
- 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.
- Two-Band EVI
Compute the two-band Enhanced Vegetation Index as 2.5 * (NIR - red) / (NIR + 2.4 * red + 1) from reflectances between zero and one, rejecting degenerate reflectances that zero the denominator.