"Polar bears have coats that help them survive in the cold Arctic where they live. The color of the coat helps them to blend in with their environment. The specialized hair cells that make up the coat keep the bear warm and dry. It is likely that the extremely low temperatures and harsh conditions of the Arctic environment caused the evolution of the thick, insulating fur and white coloration trait in the polar bear."
e the paragraph to describe the selection pattern observed in polar bears.
"Polar bears have coats that help them survive in the cold Arctic where they live. The color of the coat helps them to blend in with their environment. The specialized hair cells that make up the coat keep the bear warm and dry. It is likely that
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environmental factor caused the evolution of
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trait in the polar bear."
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