Have you thanked a retrovirus today?


Fun Fact: Certain viruses embedded in our genome have been found to have a powerful influence on our development. In fact, if it were not for viruses, we would not be mammals, we would still be monotremes laying eggs. Another retrovirus embedded in our genome activates during the early stages of pregnancy and makes it possible for the early grouping of cells to implant in the uterus. The bottom line is, much of the structure we call human, or any other species for that matter, is based on the accumulation of cooperative nourishing relationships that have offered some adaptive advantage.

http://blogs.discovermagazine.com/loom/2012/02/14/mammals-made-by-viruses/#.VuaTKpyEChc

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