Tag Archives: bacteria

Evolution, the Dirty E Word That Refuses to Die

  Theologians as well as others have been trying to stamp out evolution ever since the term first reared its ugly head in 1859 with the publishing of On the Origin of Species by Charles Darwin. Everybody knows the drill on this: … 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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Cellular differentiation and endosymbiosis revisited

In an earlier post on this page I discussed evidence that the eukaryotic nucleus is compartmentalized and how this compartmentalization may allow one compartment to become irreversibly differentiated through DNA rearrangements and deletions while leaving the remaining compartments untouched. I … Continue reading

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