Diagram Of Genetic Drift. Therefore any deviations from the five conditions of hardy weinberg equilibrium can alter the genetic variation of a given population. In a population that is not at hardy weinberg equilibrium the frequency of alleles changes over time.
Genetic drift example lets make the idea of drift more concrete by looking at an example. Download scientific diagram shared genetic drift with ancient genomes from publication. Initially the frequencies of the b and b alleles are equal.
This would be true in an infinitely large population.
Allowing the blue one to become more common even though it has no advantage. A populations allele frequency is the fraction of the copies of one gene that share a particular. Genetic drift might eliminate one of the beak sizes from the population thus reducing the genetic variations of the gene pool of birds. By chance some of the red mutations arent passed on.