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BIOL1020 - Lecture 21 - Testing for Evolution Using Hardy Weinberg

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The Hardy-Weinberg principle is a mathematical model that predicts allele and genotype frequencies in a non-evolving population under ideal conditions (no mutation, selection, drift, or non-random mating). It serves as a null model to detect evolutionary forces in real populations.

what is the Hardy-Winberg principle?

>a very simple mathematical model.

>predicts the relationship of alleles and genotypes (frequencies) in a population IF:

- no mutations

- Extremely large population (no drift)

- no selection

- random mating

> i.e., no evolution

> fictitious population

> HW provides a fantastic NULL model against which we can compare REAl populations against in order to infer processes leading to deviations from the HW expectations.

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Definition

what is the Hardy-Winberg principle?

>a very simple mathematical model.

>predicts the relationship of alleles and genotypes (frequencies) in a population IF:

- no mut...

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TermDefinition

what is the Hardy-Winberg principle?

>a very simple mathematical model.

>predicts the relationship of alleles and genotypes (frequencies) in a population IF:

- no mutations

- Extremely large population (no drift)

- no selection

- random mating

> i.e., no evolution

> fictitious population

> HW provides a fantastic NULL model against which we can compare REAl populations against in order to infer processes leading to deviations from the HW expectations.