Author:
Kristi Prohm

Date of Publication:
August 10, 2019

Publication:
The Better Breeding Blog

Excerpt:
The aim of selection is to increase the frequency of desired alleles and decrease the frequency of undesired genes in a population, ideally producing animals that breed true for the genotypes and phenotypes selected for.

One influence on the effectiveness of selection on gene frequency changes is the initial gene frequency in a population. Consider two alleles at locus A: A₁ is wanted and A₂ is not. This graph plots the frequency of A₂ in each successive generation, showing the effect of selection against that unwanted allele A₂ over many generations:

Read the rest of the article: https://betterbreeding.solutions/index.php/blog/effectiveness-of-selection-initial-gene-frequency-and-fitness-differences