This stuff gets curiouser and curiouser, doesn't it? Found the following on Wired. What would it mean if bacteria were altering our genetic inheritance or that it did so in the past? One more accidental trigger for change and speciation.
"Wolbachia is a prolific parasite, having carved out a niche for itself in some 70 percent of all invertebrate animals. But it's doing more than living in their cells: it's changing their very DNA in a way that could affect how scientists study genetics and evolution across the animal kingdom."
Read more at Wired.