Researchers sequence, analyze genomes of glowing bacteria in the bulbs that hang off heads of anglerfish. There's evidence the symbiotic relationship between the two is still evolving, even though the fish evolved about 100 million years ago. The bacteria are still losing genes, and it’s unclear why

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Researchers sequence, analyze genomes of glowing bacteria in the bulbs that hang off heads of anglerfish. There's evidence the symbiotic relationship between the two is still evolving, even though the fish evolved about 100 million years ago. The bacteria are still losing genes, and it’s unclear why