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The Holly and the I.D. – News from Epigenetics

Holly leaf shape may be due to epigenetic control – one of several recent developments in the field of epigenetics.

Rethinking Parasitism

Parasitism is bad. Parasitism is evil. Parasites wage war against innocent hosts. This is our mindset. What if parasites can do good? This change of heart seems to be happening for one case, the case of transposable genetic elements. If they are only doing harm to the host, why did some biologists find that “positive selection” seems to be maintaining them? That makes it sound like the cells need them.
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