sentences:  "Conus geographus" produces a distinct form of insulin that is more similar to fish insulin protein sequences than to insulin from more closely related molluscs, suggesting convergent evolution.Convergence occurs at the level of DNA and the amino acid sequences produced by translating structural genes into proteins.Studies have found convergence in amino acid sequences in echolocating bats and the dolphin; among marine mammals; between giant and red pandas; and between the thylacine and canids.