Are polar bears in Greenland adapting to climate change?

Yes, polar bears in south-east Greenland show genetic changes, particularly in genes related to heat and metabolism, suggesting adaptation to warmer conditions.

What are 'jumping genes' and how do they help polar bears?

'Jumping genes' are mobile DNA elements that are becoming more active in Greenland polar bears, potentially allowing them to rapidly rewrite their DNA for survival.

What is the future outlook for polar bears due to climate change?

While some genetic adaptations offer hope, polar bears still face a high risk of extinction due to melting sea ice, underscoring the need to reduce global carbon emissions.

Home / Environment / Polar Bears Rewriting DNA to Survive Climate Change

Polar Bears Rewriting DNA to Survive Climate Change

12 Dec, 2025

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Summary

Polar bear DNA shows changes related to heat and metabolism.
Jumping genes in Greenland bears' DNA are becoming more active.
These genetic shifts may help bears adapt to a warmer climate.

Polar Bears Rewriting DNA to Survive Climate Change

Scientists have identified unique genetic adaptations in polar bears inhabiting warmer regions of Greenland, suggesting a response to climate change. The study reveals that genes associated with heat tolerance, metabolism, and aging are showing altered activity, particularly in south-east Greenland where temperatures are higher.

Researchers observed a significant increase in the activity of 'jumping genes,' mobile DNA elements, within the genomes of these bears. This phenomenon, unprecedented in wild mammals, indicates a rapid genetic rewriting process that could be crucial for their survival as their icy habitats shrink and diets shift.