Members of the public are being asked to share their memories of Dolly the Sheep as part of celebrations to mark the 20th anniversary of her creation.

Dolly was the first animal to be cloned from an adult cell, marking a breakthrough in scientific research.

Her birth at the Roslin Institute in Midlothian, now part of Edinburgh University, proved cells from anywhere in the body could be made to behave like a newly fertilised egg.

The pioneering project paved the way for researchers to develop methods of producing stem cells from adult cells, offering hope of therapies for a wide-range of diseases.

The goal of the research was to develop methods of introducing genetic changes into animals.

Now, 20 years on, people are invited to give their memories of the world's most famous sheep as researchers continue to use the latest gene-editing technologies to alter animals' DNA.

Their latest efforts aim to improve the health and welfare of farmed animals.

Professor Sir Ian Wilmut, who led the team that created Dolly, said: "When Dolly was born we knew that we had achieved something extraordinary.

"But I don't think any of us would have predicted the level of public interest in our research, or that people would still be enthralled by Dolly and her legacy 20 years later."

Dolly the Sheep will return to display at the newly refurbished National Museum of Scotland in Edinburgh on Friday.

She will be among 3000 objects on show in ten new galleries devoted to science, technology, decorative art, design and fashion.