Week two

With being a Human Biology major, evolution is a necessary concept that we have to acknowledge. Studying natural science we can see and understand the concept of evolution. From studying biological organisms we can see the variety in human variability and the way or reason this variability happened. We study adaption of humans, whether it’s in regard to something as extreme as an epidemic like the flu in 1918. The flu, the same flu we see today but this strain back in 1918 wiped out hundreds of thousands of people. The reason that our population today is not losing thousands of the flu is one, the people who survived the late 1918 flu passed on resistance to their children. The other half is prevention with the help of flu shots that today unfortunately is a huge controversy. Changes such as this that we see in the human population we can also see in animals. Starting from a young age I learned natural selection is a part of evolution that can be studied in animals, such as fish. Very broad spectrum but say we have a lake with two species of fish, one is very shiny and easy for prey to spot and the other species is simply brown or a color that is able to blend in. The shiny fish will obviously be picked off faster, leaving less shiny fish for reproduction purposes. The bland fish will then pass their genes down to their offspring, allowing the bland fish to survive while the shiny fish die off. This is evolution!! The environment is choosing an aspect of survival of the fittest, even though it has nothing to do with physical composition or physical ability but just their phenotype that natural selection has picked off. 

Studying to become a physician’s assistant where I will be working in the healthcare field, evolution in cases of antibiotic resistance and small microorganisms that are adapting are so very important. Like the article mentioned, in the United States antibiotics are so over used and therefore becoming less useful. Realizing why this is occurring and how taking this powerful antibiotic and using it toward some small bacteria is weakening the true power of the antibiotic. More of a medical perspective looking at the genetic changes brought on by evolution is very eye-opening as well. When I took Medical Anthropology we looked at the case of sickle-cell anemia and malaria in Africa and I was astonished at the case and what evolution made possible. I am trying to think of how I would go about these cases and scenarios if I was not aware of evolution. How would you teach science or understand any basics of any biology, chemistry, physiology, anatomy or generally any science without the concept of evolution? What would be the reason or causation for the variety and diverse variations of almost anything biological in the world. Natural selection, genetic drift, mutations, all of these are causes and explain the reasons of why we have variety and variability when it comes to species. This is all explained with the concept of evolution, otherwise I am trying to think of what would be the theory or concept tying it all together and explaining variety. 

One thought on “Week two

  1. Hey Hannah! I really enjoyed your blog post. As a fellow human biology major, I can totally understand what you mean when you describe studying natural science we can see in order to understand the concept of evolution. I said something similar in my post describing that changes to our bodies alone as examples of evolution. The flu is a great example of modern-day evidence of evolution and I agree that it is a shame that flu shots and other vaccinations have become such a great controversy today. Its awesome that you’re studying to become a physician’s assistant and I agree that antibiotic resistance is an important topic moving forward. I was also stunned when I first learned of the link between sickle cell anemia and malaria. Overall, great post and good luck in the future!

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