Tag Archives: mutualism

Would you like to learn more?

Howdy, folks! I have been receiving a number of comments from people who say they are struggling with the blog concepts. As a teacher, I find this a little frustrating because I have no idea what concepts are causing issues … Continue reading

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Salk Scientists See 3D Structure of DNA

When I was a very young man (pre-college I believe) I wrote a letter to Jonas Salk about a way to combat cancer using immunotherapy. He actually wrote me back and asked if I was working in the field! Amazing, … Continue reading

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Evidence for hierarchical endosymbiosis

In this blog, there are numerous references regarding hierarchical endosymbiosis. Simply put, this phrase means that cells swallowed smaller cells that were, in turn,  swallowed by larger cells and so forth. Not only did this swallowing happen, but the genetic material of … Continue reading

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The evolution of mitosis

The evolution of mitosis may have greatly facilitated the uptake of genome-sized exogenous DNA’s into early eukaryotes. Click here to view models that may explain how mitosis may have evolved from prokaryotic symbiotic relationships.

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Could our DNA have evolved from simple viruses?

In this blog, I discuss the evolution of complex organisms from more primitive ancestors. When I do this, I go way, way, way back in time.. before mammals, dinosaurs, fish, simple sponges, one celled protozoa, and even before the first … Continue reading

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Are textbook depictions of our chromosomes accurate?

In probably every textbook illustration you can find on human chromosome structure, there is always the same recurring theme: They are depicted as simple, linear strands of DNA wound up much like garden hoses or balls of twine.  However, you … Continue reading

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Are cancers new species?

There is a very interesting article suggesting that cancers may actually be new species.  In this study, chromosomal probes specific for each chromosome in a human cell are matched against chromosomes found in human cancers.  In Figure 8 of this … Continue reading

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