sheep

No need to walk around muddy fields for authenticity: “That’s real sheep poo.”

She works at the Roslin Institute, where Dolly the Sheep was cloned nearly 30 years ago.

The gene editing work at Roslin is led by its director, Prof Bruce Whitelaw, who was a scientist at the institute when Dolly the sheep was cloned.

Berhane had veered off the usual mountain footpath because he had spotted his family’s sheep and goats grazing - and had gone over to stop them entering someone else’s plot of land.

"Planning the sheep feed and all the running around in the trucks and things - it's a lot."