Evolution 2021

Pick one disease of civilization that interests you in particular, and research how changes in lifestyle may have been associated with its rise. We expect well-researched contributions. Provide links to all the references you consulted. One disease that interests me in particular is asthma because my older sister and I have minor problems, but my parents do not. I don't really know that much about it, only that it makes it hard to breathe. Multiple things can trigger your airways, causing them to tighten or twitch. Each person’s asthma is unique and reacts to different triggers. These triggers may be caused by house dust, molds, animals, cockroaches, the outdoors, strong smells, the weather, infections, food and medicine allergies, exercise, stress and emotions, reflux and heartburn, and smoking. As far as changes in lifestyle may have been associated with asthmas rise within civilization, I would say smoking has the most harmful effects on an individual because it can cause multip...

How long does it take for new species to form?   Do you think the speed of speciation varies among different modes of speciation?   Look for evidence to support your conclusions! I think it the length of time for a new species to form would vary for each species. It would also depend on  how you define speciation. In the class textbook, there's at least 10 different definitions of what a species is in different contexts. I've been exposed to the  Biological Species Concept (A species is a group of actually or potentially interbreeding natural populations, which are reproductively isolated from other such groups) the most, so I'd say I'm most familiar with this definition.  I do think the speed of speciation varies among different modes of speciation (and by modes of speciation I think they're specifically referring  to  allopatric and sympatric speciation?) It's harder to tell if sympatric speciation has occurred compared to allopatric s...

With your knowledge of sexual selection theory, can you formulate a hypothesis that explains why female courtship might have evolved in this species? Is there anything about pipefish biology that might support your hypothesis? With my knowledge of sexual selection, I know that typically females have the choosers bias when it comes to courtship. This is because, most commonly, females invest more time and energy than the males when it comes to reproduction. The females can afford to picky, while the males can't. The males are trying to reproduce as much as possible, while females have to invest more time and energy to carry the fertilized eggs and eventually give birth. Because females invest so much, they have high standards when it comes time to pick a mate. Even then, some mothers continue to raise the offspring up until a certain point. While it does occur in some cases, males are not typically the ones to help raise the offspring. Males typically invest a small amount of time a...