Through the analysis of DNA extracted from the petrous bones of skulls of ancient Europeans, scientists have identified that these peoples remained intolerant to lactose
Just as if you were adjusting a watch, the key to accurately telling evolutionary time is based on periodically calibrating against a gold standard.
Genetic analysis reveals present-day Europeans descended from at least 3, not 2, groups of ancient humans.
Streptococcus mutans, a principle bacterium that causes dental caries, has increased the change in its genetic material over time, possibly coinciding with dietary changes that
European researchers have recovered a genome of the bacterium Brucella melitensis from a 700-year-old-skeleton discovered in the ruins of a Medieval Italian village.