For example, why one leg or arm *usually* isn’t visible larger than the other
In: Biology
I’m not exactly sure what your asking, but I’ll try to answer anyway.
If you’re wondering how / why both sides of our bodies are similar weight and density, or why we are symmetrical, I can answer it with one easy word: evolution.
As humans, we run the fastest, the longest, and function at best when our weight is evenly distributed. We don’t have to have that one heavy leg that we need to drag, or have to awkwardly lean because one arm is huge compared to the other. We can efficiently function when everything is equal size and weight.
The reason why the majority of people have it is because our ancestors only mated with those who were strong, fast, and able. Symmetrical people were the strongest, fastest, and most able. I don’t mean that we started out unsymmetrical, but it was more like whenever someone was born unsymmetrical, they often didn’t reproduce to pass down any unsymmetrical traits.
Not sure if this answers, but hope it helps.
Latest Answers