Zitat des Tages von Hendrik Poinar:
Teeth actually turn out to be one of a couple of good sources of ancient DNA. The teeth, actually the enamel, is quite good at preserving the DNA, so it is a bit of time capsule so to speak.
There is no good scientific reason to bring back an extinct species. Why would one bring them back? To put them in a theme park?
I'm not sure the Russians would be happy that their iconic wooly mammoth has North American origins.
We know African and Asian elephants can interbreed, and they're separated by 5 million to 6 million years.
You can go into caves, and they can maintain constant conditions of temperature and humidity over long periods of time, even though the outside temperature may be way above what it is inside the cave.
It turns out that there are swaths of habitat in the north of Siberia and Yukon that actually could house a mammoth. Remember, this was a highly plastic animal that lived over tremendous climate variation.
When I was a young boy, I used to gaze through the microscope of my father at the insects in amber that he kept in the house. And they were remarkably well preserved, morphologically just phenomenal.
There's no environment I can think of that would have remained constant enough to preserve dinosaur DNA.
