Their method involves first creating a detailed three-dimensional reconstruction of the skull, working from the high-resolution scan to produce a physical replica.

Then soft tissue reconstruction is built up over this skull base, using established forensic anthropology guidelines about the typical relationships between skull measurements and soft tissue depth at various facial points.

These guidelines — derived from studies of modern populations — allow reconstruction of the general contour of the face from the underlying bone structure.

The specific characteristics derived from the DNA analysis — the dark skin, the blue eyes, the dark curly hair — are then applied to the physical reconstruction.

The model makers worked with the genetic research team to translate the probabilistic genetic predictions into specific visual features.