backtop


Print


the Dollies  (Source: dailymail.co.uk)
Nicknamed "the Dollies," four new sheep share exact genetic traits with Dolly

Seven years after the death of Dolly, a female sheep who was the first to be cloned using an adult somatic cell, four new sheep have been cloned using Dolly's frozen tissue sample that has been sitting in a freezer since her death in 2003.

Professor Keith Campbell, one of the original biologists who cloned Dolly, is keeping the four new quads on his land at the University of Nottingham as pets. They have been nicknamed "the Dollies," since they are exact copies of Dolly genetically. 

In 1996, Dolly, who was named after the country singer Dolly Parton, was cloned at the Roslin Institute near Edinburgh in Scotland. She was the first mammal to be cloned using an adult cell from a mammary gland, and was praised as a scientific phenomenon in headlines worldwide. But as she aged, Dolly experienced several health complications such as arthritis and advanced lung disease. At the young age of six, Dolly was put down because of her poor health. 

But Dolly lives on. Her leftover sample of tissue has remained in the freezer all these years later, and now four exact replicas carry her DNA

Campbell cloned the Dollies to see if improvements made to the cloning technique prevented the health problems that Dolly suffered within the new sheep. So far, Campbell says the Dollies are doing fine and that they are being watched very closely. 

"We are not doing anything to them," said Campbell. "They have no health concerns and they show none of the signs of developing the arthritis that Dolly had."

In addition to being healthier than Dolly, the Dollies were also easier to clone. During Dolly's cloning process, 277 eggs were used to create 29 embryos and only Dolly survived. With the Dollies, only five embryos were required to produce each of the four Dollies. 

The Dollies are already three and a half years old, but Campbell did not mention their existence until a recent lecture at the European Parliament debate on cloning and animal welfare. He is looking to publish further detail on the Dollies in a scientific journal, noting that the cloning technology is improving but not yet perfect. 

Several different groups are taking interest in the Dollies, such as animal welfare campaigners and stem cell scientists. Animal welfare campaigners have detailed the suffering that clones and surrogates experience during the cloning process, and Peter Stevenson of Compassion in World Farming has even said that "cloning is a welfare disaster."

Despite the critics, Campbell insists that improved technology has put the Dollies at less of a risk of health problems, and that the four sheep "got the life of Reilly - they potter around and get fed."





"I'm an Internet expert too. It's all right to wire the industrial zone only, but there are many problems if other regions of the North are wired." -- North Korean Supreme Commander Kim Jong-il
Related Articles






Most Popular ArticlesSuper Hi- Vision Will Amaze the World
January 16, 2017, 9:53 AM
Samsung Chromebook Plus – Coming in February 2017
January 17, 2017, 12:01 AM
Samsung 2017 Handset’s Updates
January 17, 2017, 12:01 AM
Comparison – Surface Pro VS Tbook X5 Pro
January 21, 2017, 7:00 AM
Comparison – iPad Mini Vs Huawei MediaPad M3
January 19, 2017, 2:08 AM

Latest Blog Posts
Some new News
Saimin Nidarson - Jan 23, 2017, 8:59 AM
What is new?
Saimin Nidarson - Jan 22, 2017, 7:00 AM
News
Saimin Nidarson - Jan 20, 2017, 7:00 AM
News of the World
Saimin Nidarson - Jan 19, 2017, 7:00 AM
Some tips
Saimin Nidarson - Jan 17, 2017, 12:16 AM
News of the Day
DailyTech Staff - Jan 16, 2017, 12:10 PM
Tech News
Saimin Nidarson - Jan 15, 2017, 12:32 AM
Here is Some News
Saimin Nidarson - Jan 14, 2017, 12:39 AM
News around the world
Saimin Nidarson - Jan 12, 2017, 12:01 AM
Rumors and Announcements
Saimin Nidarson - Jan 11, 2017, 12:01 AM
Some news of Day
Saimin Nidarson - Jan 7, 2017, 12:01 AM
News 2017 CES
Saimin Nidarson - Jan 6, 2017, 12:01 AM






botimage
Copyright 2017 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki