(EXTINCT SPECIES) Who doesn’t love Jurassic Park? Or the idea of being surrounded by dinosaurs and prehistoric creatures? This dream could soon become a reality with the discovery of woolly mammoth bone marrow. Scientists claim they can use the marrow to clone the prehistoric beast, but we do have to question the ethics involved here. Read on for more information about the potential return of an extinct species. — Global Animal
Jennifer Viegas, Discovery News
Within 5 years, a woolly mammoth will likely be cloned, according to scientists who have just recovered well-preserved bone marrow in a mammoth thigh bone. Japan’s Kyodo News first reported the find. You can see photos of the thigh bone at this Kyodo page.
Russian scientist Semyon Grigoriev, acting director of the Sakha Republic’s mammoth museum, and colleagues are now analyzing the marrow, which they extracted from the mammoth’s femur, found in Siberian permafrost soil.
Grigoriev and his team, along with Japan’s Kinki University, have announced that they will launch a joint research project next year aimed at recreating the enormous mammal, which went extinct around 10,000 years ago.
Mammoths used to be a common sight on the landscape of North America and Eurasia. One of my favorite papers of recent months concerned the earliest known depiction of an animal from the Americas. It was amammoth engraved on a mammoth bone. Many of our distant ancestors probably had regular face-to-face encounters with the elephant-like giants.
The key to cloning the woolly mammoth is to replace the nuclei of egg cells from an elephant with those extracted from the mammoth’s bone marrow cells. Doing this, according to the researchers, can result in embryos with mammoth DNA. That’s actually been known for a while.
What’s been missing is woolly mammoth nuclei with undamaged genes. Scientists have been on a Holy Grailtype search for such pristine nuclei since the late 1990’s. Now it sounds like the missing genes may have been found.
In an odd twist, global warming may be responsible for the breakthrough.
Warmer temperatures tied to global warming have thawed ground in eastern Russia that is almost always permanently frozen. As a result, researchers have found a fair number of well-preserved frozen mammoths there, including the one that yielded the bone marrow.
Is it such a good idea, however, to clone animals that have long been extinct? For a while there’s been some discussion of a real life Jurassic Park setup containing such animals. Introducing these beasts into existing ecosystems could be like bringing in a potentially invasive species that would try to fill some space presently held by other animal(s). Even if the cloned animals were contained in special parks, there could still be a risk of spreading.
So if the woolly mammoth is successfully cloned sooner rather than later, we’d probably be left with more questions and controversy than answers, at least in the short term.
More Discovery News: http://news.discovery.com/