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Hardy-Weinberg law

Definition

noun

A principle stating that both allele and genotype frequencies in a randomly-mating population remain constant – and remain in this equilibrium across generations -- unless a disturbing influence is introduced.


Supplement

For instance, a population containing the genotypes AA, aa and Aa, the frequency of AA will always be p2, aa will be q2, and Aa will be 2pq at equilibrium, where the p is the frequency of A and q is the frequency of a.

Deviation from Hardy-Weinberg principle indicates evolution of species. Examples of disturbing influences include non-random mating, mutations, selection, limited population size, random genetic drift and gene flow.


Word origin: named after G. H. Hardy and Wilhelm Weinberg.

Variants:


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Results from our forum


Question on Hardy Weinburg Law

Hi, I'm stuck on this frequency calculation probelm. It would be great if someone knows how to solve it and helps me out. Given: There are 3 genotypes making up a small population of 50 individuals, with respect to one gene with two alleles. The alleles for the gene are A^P, Pink allele and A^Y, yel...

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by DerHaus
Fri Feb 15, 2008 5:18 pm
 
Forum: Genetics
Topic: Question on Hardy Weinburg Law
Replies: 2
Views: 1974

Equation for Hardy – Wineburg Law

Use this equation and see if helps. Binomial E :D xpansion: p2+ 2pq+p2=1

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by Martinezgirl
Mon Jun 06, 2005 10:08 pm
 
Forum: Genetics
Topic: Hardy weinburg equation please HELP!!!!!!!!!!!!!!!!!!!!!!!!!
Replies: 19
Views: 14561


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