The Romans and Vikings left few genetic traces of their occupations of Britain, research suggests

A close up of a gray statue of a man wearing a cloth toga and laurel crown.

The Romans controlled much of Britain for nearly 400 years, but they left relatively little genetic evidence of their occupation, new ancient-DNA research reveals.

Instead, the Roman occupation, from A.D. 43 until about 410, seems to have changed the culture of their Britannia province, with most people native to Britain converting to Imperial Roman ways.