Dictionary » H » Hardy-Weinberg equilibrium

Hardy-Weinberg equilibrium

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.


Abbreviation: HWE
Variants:


User Contributions / Comments:

  • Basically, The Hardy-Weinberg equation is concerned with the genetics of populations and that random mating occurs.

(~Dlee7283)


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Hardy Wein Berg Equilibrium problem

Hello, Can anybody help me with this? I'm completely stumped and have an exam tomorrow. 8. A population of white-clover plants on the coast of Wales includes individuals that release cyanide when their leaves are damaged (cyanogenic plants) and those that do not (acyanogenic plants). These differenc...

See entire post
by jackieabbott
Sat Mar 03, 2012 9:28 am
 
Forum: Ecology
Topic: Hardy Wein Berg Equilibrium problem
Replies: 1
Views: 2978

Evolution Homework

... you did there. As for the next generation, remember this system is in Hardy-Wienberg equilibrium, meaning allele frequencies remain constant. When you have mutation with a lethal ...

See entire post
by aptitude
Tue Oct 04, 2011 6:25 am
 
Forum: Evolution
Topic: Evolution Homework
Replies: 2
Views: 4414

Re: The Hardy-Weinburg equation describes a situation...

I have had a think about it and I could only decide that H-W equilibrium wouldn't take place if the conditions for HW were incorrect A small population size which would cause genetic drift right? That covers two of the principals right? large pop size ...

See entire post
by Chemhalp
Sat Jan 24, 2009 6:19 pm
 
Forum: Evolution
Topic: The Hardy-Weinburg equation describes a situation...
Replies: 3
Views: 2692

Frequencies in Gentics

Time to go look up Hardy Wineberg equilibrium online. I don't do people's homework, sorry.

See entire post
by daniel.kurz
Tue May 27, 2008 6:54 pm
 
Forum: Genetics
Topic: Frequencies in Gentics
Replies: 2
Views: 2177

How to calculate the p value for Hardy-Wenberg Equilibrium

Hi, I have used several online HW calculators, but I have noticed differences between them. How can I calculate the p value if I only know the Chi square?. Thanks a lot

See entire post
by Nice2U
Tue Dec 04, 2007 5:57 pm
 
Forum: Genetics
Topic: How to calculate the p value for Hardy-Wenberg Equilibrium
Replies: 0
Views: 2804


This page was last modified 23:17, 14 December 2009. This page has been accessed 25,733 times. 
What links here | Related changes | Permanent link