Definition Of Gene Drift

Genetic drift definition random changes in the frequency of alleles in a gene pool usually of small populations.

Definition of gene drift. Genetic drift can result in genetic traits being lost from a population or becoming widespread in a population without respect to the survival or reproductive value of the alleles involved. Tell a friend about us add a link to this page or visit the webmaster s page for free fun content. Want to thank tfd for its existence. Genetic drift is a change in allele frequency in a population due to a random selection of certain genes.

These changes in genetics can increase or decrease in a population simply due to chance. It occurs due to an error in selecting the alleles for the next generation from the gene pool of the current generation. See random genetic drift. It occurs in very small populations but its effects are strong.

Genetic drift a change in the gene pool of a small population that takes place strictly by chance. Genetic drift also known as allelic drift or the sewall wright effect is the change in the frequency of an existing gene variant in a population due to random sampling of organisms. The drifting of novel bio engineered genes into wild populations is a serious threat to biodiversity potentially allowing altered trees to outcompete native populations and disrupting ecosystems dependent on those trees according to the july 2000 report released by the alliance. The alleles in the offspring are a sample of those in the parents and chance has a role in determining whether a given individual survives and reproduces.