The polar bear again collides with the brown bear

Polar bears and brown bears have split into two separate branches about 4 to 5 million years ago, but they still hybridize when the weather gets warmer. And now, experts have found evidence that this process is happening again.

The polar bear's past can be repeated in the future, after reporting that polar bears have ever crossed with brown bears after they split into two separate species about 5 million years ago.

Polar bears

Climate change is likely to trigger an improvised 'exchange' between two different bears, according to US and Singapore experts.

The report of Pennsylvania State University (USA) in conjunction with Nanyang Technological University (Singapore) estimated that white bears have long separated from brown bears, about 4 to 5 million years ago.

Professor Stephan Schuster and colleagues deciphered the genes of three brown bears, one black bear and compared them to the polar bear genome, including a modern species and the rest from the remains. of polar bears 120,000 years old.

Results showed that recently wild wild bear and even second generation descendants were recorded in Beaufort north sea of ​​the Arctic, when the habitat of brown bears and white bears overlap, according to the words. experts write in the report.

Polar bears now face the risk of losing their habitat due to climate change, this time by humans.

If the trend continues, the white bear may be forced to live on land instead of ice, and meeting with brown bear relatives is likely to happen, according to a report. Proceedings of the National Academy of Sciences.