The Wenatchee World

Weather:

Weather

The latest extended forecast from The Weather Channel

Remove this weather forecast

This Afternoon

Hi42° Areas Fog

Tonight

Lo33° Areas Fog

Monday

Hi46° Areas Fog

Monday Night

Lo30° Areas Fog

Tuesday

Hi44° Areas Fog

Tuesday Night

Lo33° Patchy Fog

Wednesday

Hi41° Patchy Fog

Wednesday Night

Lo34° Patchy Fog

Thursday

Hi43° Patchy Fog

Thursday Night

Lo33° Patchy Fog

DNA tests show polar bear’s ability to adapt to temperatures

Send to Kindle
Print This
Scientists have conducted the most in-depth analysis of the polar bear’s genome to date, revealing that past climate changes affected the animals. New genetic techniques also explain how the polar bear has adapted so well to its environment. The world’s 20,000 to 25,000 remaining polar bears are classified as vulnerable, with dwindling Arctic sea ice reducing their chances of hunting and breeding. Increasing greenhouse gas emissions are largely responsible for the deterioration of the polar bear’s habitat, and the genetic diversity of the population has also suffered as numbers have dwindled. An international group of researchers led by biologist Charlotte Lindqvist of the University at Buffalo investigated how the polar bear arose and developed, using DNA from an ancient polar bear and a modern one, as well as from modern brown and black bears.

View my optionsorSign in