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Study of Arctic fishes reveals the birth of a gene – from ‘junk’

Animal biology professor Christina Cheng and her colleagues determined how the gene for an antifreeze protein in Arctic fish evolved from noncoding DNA.

Though separated by a world of ocean, and unrelated to each other, two fish groups – one in the Arctic, the other in the Antarctic – share a surprising survival strategy: They both have evolved the ability to produce the same special brand of antifreeze protein in their tissues. A new study describes in molecular detail how the Arctic fishes built the gene for their antifreeze from tiny fragments of noncoding DNA, regions once considered “junk DNA.”

The findings are reported in the Proceedings of the National Academy of Sciences.

Read the full article at the Illinois News Bureau


Publication Date: 02/12/2019
Photo credits: L. Brian Stauffer
Editor: Diana Yates