Natural Selection Critical Thinking Self-Assessment

Collecting and sorting red and black prey, while they are camouflaged in a red environment. An example of natural selection.

I demonstrated that I can collect and analyze evidence when I recorded my data for both labs. During the first lab pictured, I successfully went through the steps of the lab, executing them properly and efficiently. Afterward and during the lab, I collected all of the evidence I had found; an example is when I counted the amount of red prey vs black prey and compared them towards each other in each environment. A second example is when in the second lab, I analyzed all of my collected data and came to a conclusion. The conclusion was that the spoon-feeding tool was the best for gathering food in each environment.

I demonstrated I can collect evidence and connect big ideas when doing lab questions. After each lab, we were asked multiple questions regarding the data that we found. This is a perfect example of connecting evidence/data to big ideas. An example would be within the pictured lab; I connected my evidence/data and discovered that, over successive generations, there would be genetic changes based on the specific environment that the prey are in. In a red environment, as pictured above, over successive generations due to natural selection the black prey would slowly turn more into a red colour, as demonstrated the data recorded, the red survived/thrived more within this environment than the black.

I demonstrated that I can make predictions based on evidence during the second lab. Within this lab, we were each given different feeding tools, (spoon, fork, knife, chopsticks, broken fork, and handle,) and we had to pick up various food with them, to fill up a small-sized cup. During the lab, I recorded evidence and data to make and prove predictions. One of the predictions I made was that the spoon-feeding tool will become the most common in each environment. This is because of the data I found; in each of the four environments, the spoon filled up the cup in the fastest amount of time and was efficient doing so. Based on this evidence, I can confidently say that the spoon will be the “alpha utensil,” within each tested environment, with the other utensils either migrating, dying off, or struggling for survival due to starvation and competition with the spoon.

I demonstrated that I can come to reasonable conclusions when completing lab questions. During both of the labs, multiple conclusions were made based on the data and the process of doing the lab. An example of one of these conclusions is from the first lab; the ultimate conclusion was that when prey are camouflaged, they will survive compared to the prey that are not. An example of this conclusion is within the red environment pictured above; the data was a clear depiction of camouflage equalling survival. The data collected shows a significant number of red prey survived, and a significant number of black prey died. This reasonable conclusion uses both knowledges of natural selection, as well as using the data to its full advantage.


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