What is the Hardy-Weinberg equation and what is it used for?

The Hardy-Weinberg equation is a model predicting allele frequency in an population, under the assumption that the frequency of alleles in a population does not change and will contribute equally to the next generation (No natural selection, no mutation, no migration of individuals, random mating). No real life population satisfies all the criteria, but it is useful for predicting allele frequencies in an ideal population. Equation = p2 + 2pq + q2 = 1 Where p2 is the frequency of homozygous dominant (AA), 2pq is the frequency of heterozygous genotypes (Aa), and q2 is the frequency of homozygous recessive (aa), where p + q = 1 (100% of the population has either the dominant or recessive allele). In A-level exams the equation is often used to predict the allele frequency of a specific genotype (eg . carrier for a disease) when one of the genotype/phenotype/allele frequencies is provided.

Answered by Juliet C. Biology tutor

2658 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How does the heart contraction and what controls Heart Rate (HR)?


Can you name the 3 different energy systems and give an example when each would be used?


What is nitrogen fixation?


Explain why a genetic fingerprint is unique to every individual


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences