In The Genetic Theory of Adaptation: A Brief History by H. Allen Orr, the article discusses adaptation and how of which it was affected by micromutationism, phenotypic evolution and sequence. evolution and different models that have appeared over the years. Before going into detail, the article explains that “adaptation is not natural selection,” as Ronald A. Fisher pointed out in the 1930s (Orr 1). It glosses over how evolutionary geneticists define and distinguish the two terms and how recent models of adaptation characterize evolutionary models and fitness. Micromutationism was a pre-Mendelian theory that began with Darwin and emphasized the gradual progression of phenotypic evolution. This theory was incredibly influential and founded biometric schools on his idea. However, it was fiercely contested by Mendelian genetics then in full swing. Despite the conflict, the theory of micromutationism eventually prevailed in the 1930s, primarily due to Fisher and his blending of the two theories to construct "a mathematical framework known as the infinitesimal model" (Orr 2). Although modern evolutionists tend to ignore this model, it nevertheless has some credible points. The article then discusses two new theories that have emerged, known as quantitative trait locus analysis and experimental microbial evolution. These theories concluded that evolution involved large genetic changes resulting from a compilation of a minimal number of tiny changes. In the next part of the article, Fisher's model of geometric adaptation is presented. This model presents evolution in small steps or circularism. It reflects the effect of spontaneous mutations on various traits. Fisher argued through his model that more complex species...... middle of article...... for more accurate predictions of how species will evolve and whether or not certain species will survive and what Adaptations could promote or inhibit this process. There are different adaptation methods that animals and plants can use in nature. Thus, exploring adaptations during our lessons would give us a better understanding of what caused certain things to demonstrate specific adaptations and would aid in the explanation and expansion of convergent evolution. Understanding adaptation and reading the processes and models developed to explain it made a difference. between adaptation and natural selection to cement itself. Knowing that adaptation adapts an organism to its environment, while natural selection eliminates those that are not fit to survive, impacts an individual's understanding of how evolution has occurred and continues to occur. 'take place..