Hardy weinberg principle11/13/2022 ![]() Pharmaceutical companies produce hundreds of millions of doses in a short period in order to provide vaccinations to key populations at the optimal time.īecause viruses, like the flu, evolve very quickly (especially in evolutionary time), this poses quite a challenge. Scientists then work to create the most effective vaccine to combat those selected strains. They base this knowledge on how flu strains have evolved over time and over the past few flu seasons. Each year, scientists across the globe strive to predict the flu strains that they anticipate as most widespread and harmful in the coming year. ![]() ![]() The media hype of annual flu shots is scientifically grounded in our understanding of evolution. However, do you think of it in terms of evolution? You may think of the annual flu shot as media hype, an important health protection, or just a briefly uncomfortable prick in your arm. Scientists, health experts, and institutions determine recommendations for different parts of the population, predict optimal production and inoculation schedules, create vaccines, and set up clinics to provide inoculations. The theory also connects population change over time (microevolution), with the processes that gave rise to new species and higher taxonomic groups with widely divergent characters, called (macroevolution).Įvolution and Flu VaccinesEvery fall, the media starts reporting on flu vaccinations and potential outbreaks. In short, the modern synthesis describes how evolutionary processes, such as natural selection, can affect a population’s genetic makeup, and, in turn, how this can result in the gradual evolution of populations and species. Generally, this concept is accepted today. However, over the next few decades scientists integrated genetics and evolution in what became known as the modern synthesis-the coherent understanding of the relationship between natural selection and genetics that took shape by the 1940s. Initially, the newly discovered particulate nature of genes made it difficult for biologists to understand how gradual evolution could occur. Scholars rediscovered Mendel’s work in the early twentieth century at which time geneticists were rapidly coming to an understanding of the basics of inheritance. Darwin and Wallace were unaware of the Austrian monk Gregor Mendel's 1866 publication "Experiments in Plant Hybridization", which came out not long after Darwin's book, On the Origin of Species. The predominant (and incorrect) genetic theory of the time, blending inheritance, made it difficult to understand how natural selection might operate. This lack of knowledge was a stumbling block to understanding many aspects of evolution. People did not understand the mechanisms of inheritance, or genetics, at the time Charles Darwin and Alfred Russel Wallace were developing their idea of natural selection. ![]() Define the Hardy-Weinberg principle and discuss its importance.Define population genetics and describe how scientists use population genetics in studying population evolution.By the end of this section, you will be able to do the following: ![]()
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