There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
--- Peter Broekhuijsen ---

  • 1 Vote(s) - 4 Average
  • 1
  • 2
  • 3
  • 4
  • 5
The ABC Island bears

India brotherbear Offline
Grizzly Enthusiast
#1

https://www.nwf.org/News-and-Magazines/National-Wildlife/News-and-Views/Archives/2013/News-of-the-Wild-Bears-2013.aspx 

 A GENETIC STUDY OF ALASKAN BEARS published last March in PLOS Genetics reveals that the huge brown bears of Alaska's Admiralty, Baranof and Chichagof Islands, known as the ABC Islands, originated as a population of polar bears. DNA studies by James Cahill, a graduate student in ecology and evolutionary biology at the University of California-Santa Cruz, and his colleagues revealed that ABC-island brown bears show clear evidence of polar bear ancestry and share more DNA with female polar bears than with males. This evidence suggests that at the end of the last ice age a polar bear population became isolated on the ABC Islands and that male brown bears, which when young tend to leave the area where they were born, swam to the islands and “gradually transformed the population from polar bears into brown bears,” Cahill says.The new work indicates that episodes of gene flow between the two species occurred only in isolated populations and did not affect the larger polar bear population, which remains free of brown bear genes. However, the findings suggest that continued climate warming and loss of Arctic sea ice may allow the same genetic swamping to occur more broadly.
4 users Like brotherbear's post
Reply

United States GrizzlyClaws Offline
Canine Expert
*****
Moderators
#2
( This post was last modified: 10-09-2016, 05:36 AM by GrizzlyClaws )

These Brown bears are closely related to the Brown bears that evolved into the Polar bears.

However, the only difference is that they didn't mutate.
5 users Like GrizzlyClaws's post
Reply






Users browsing this thread:
1 Guest(s)

About Us
Go Social     Subscribe  

Welcome to WILDFACT forum, a website that focuses on sharing the joy that wildlife has on offer. We welcome all wildlife lovers to join us in sharing that joy. As a member you can share your research, knowledge and experience on animals with the community.
wildfact.com is intended to serve as an online resource for wildlife lovers of all skill levels from beginners to professionals and from all fields that belong to wildlife anyhow. Our focus area is wild animals from all over world. Content generated here will help showcase the work of wildlife experts and lovers to the world. We believe by the help of your informative article and content we will succeed to educate the world, how these beautiful animals are important to survival of all man kind.
Many thanks for visiting wildfact.com. We hope you will keep visiting wildfact regularly and will refer other members who have passion for wildlife.

Forum software by © MyBB