The Wenatchee World

Weather:

Weather

The latest extended forecast from The Weather Channel

Remove this weather forecast

Overnight

Lo44° Slight Chc Rain

Saturday

Hi60° Chance Rain

Saturday Night

Lo42° Showers

Sunday

Hi56° Partly Sunny

Sunday Night

Lo39° Partly Cloudy

Monday

Hi54° Mostly Sunny

Monday Night

Lo44° Chance Rain

Tuesday

Hi51° Chance Rain

Tuesday Night

Lo44° Slight Chc Showers

Wednesday

Hi56° Partly Sunny

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