Roslin Institute
- Start
- Feb 22, 199790% CONFIDENCEfrom the source
The Roslin Institute Announces Dolly the Sheep
- Dolly's existence was announced to the public on 22 February 1997, seven months after her birth on 5 July 1996[2]
- She was the first mammal cloned from an adult somatic cell - a cell taken from a mammary gland, by somatic cell nuclear transfer - which proved a cloned organism could be produced from a mature cell from a specific body part[2]
- The approach built on John Gurdon's 1958 cloning of African clawed frogs, and Dolly's success led on to stem cell research and the discovery of induced pluripotent stem cells[2]
- She lived at the Roslin Institute all her life and produced several lambs; she was euthanised at six with a progressive lung disease, and no cause linking the disease to her cloning was found[2]
- Her body was preserved and is on display at the National Museum of Scotland[1][2]
References 290% CONFIDENCE
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%ed.ac.uk/roslin/about/dollyed.ac.uk· Posted Sep 22, 2026· Starts Feb 22, 1997 ✓· 50% of score
Wikipedia's[2] article on Dolly states it without hedging: "Dolly's existence was announced to the public on 22 February 1997." She had been born on 5 July 1996, so the birth and the announcement are seven months apart and this pin takes the announcement, the day the result became public.
- [2]90%Dolly (sheep)en.wikipedia.org· Added Sep 22, 2026· 50% of score
Gives the announcement date, the birth date of 5 July 1996, the method (nuclear transfer from a mammary gland cell), the foundational work by John Gurdon cloning African clawed frogs in 1958, and Dolly's death in 2003 from a progressive lung disease not linked to her cloning.[1]
Suggest a correction
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.
Amazon
