'Dead' Gene Comes Back To Life In Humans

Researchers have discovered that a long-defunct gene was resurrected during the course of human evolution. This is believed to be the first evidence of a doomed gene – infection-fighting human IRGM – making a comeback in the human/great ape lineage. The truncated IRGM gene is one of only two genes of its type remaining in humans. The genes are Immune-Related GTPases, a kind of gene that helps mammals resist germs like tuberculosis and salmonella that try to invade cells.
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I personally don't know much about genetics, but this seems quite fascinating, considering it's the first time a 'dead' gene making a comeback in the human/great ape lineage.