This sea anemone now has the largest animal mitochondrial genome on record, at almost 81,000 base pairs. Humans have fewer than 17,000. "These ancient animals have simple behavior and simple anatomy, and so we’ve thought of them as fairly simple creatures until now."

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This sea anemone now has the largest animal mitochondrial genome on record, at almost 81,000 base pairs. Humans have fewer than 17,000. "These ancient animals have simple behavior and simple anatomy, and so we’ve thought of them as fairly simple creatures until now."