Last Sunday,I seen animal samples for the exhibition ,that animal sample liveness . 20 Century ,some animal die out , example : Ectopistes migratorius , Thylacinus cynocephalus.
I reading some book,I know some animal samples have completeness DNA ,so I think use animal samples DNA clone animals , Rescue them.
Posts: 32 | Location: world | Registered: 04-05-06
There are problems with this. One is that animal cloning is not a perfected technique and another is that the DNA may not be fully intact in preserved samples.
This aside, cloning animals doesn't offer much of a solution once extinction of very near extinction is reached. There's a reason for the social conventions that prevent incest. Closely related individuals are more likely to share harmful recessive genes. Combine two copies of the same harmful recessive gene and the animal gets the disease. With a population of clones, the problem becaomes even worse. It's not just genetic diseases, either. Populations with low genetic diversity cannot adapt to changes. Once a population reaches a small size, it is very difficult to save it from extinction for these reasons.
Of course, there are also the difficulties with how you raise an animal in captivity that will be able to survive in the wild.
They could always just make a greater effort to capture the Thylacines that have been seen in Australia. There have been many sightings. It seems that, in the 1920s and 1930s, some people, worried that the dwindling numbers meant extinction, smuggled some to Austraila.
Posts: 17230 | Location: Lincoln Place, Granite City, IL, USA | Registered: 06-03-02
