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[Cnidaria] Aurelia with 6 gonads |
 | | Thus, there may be some genetic component to the variation. |
 | | In one lineage observed over 4.5 months, the rate of non-tetramery declined substantially from an initial high of 88.9% to a final cumulative low of 29% Apparently this lineage was able to stabilize tetramery over time, possibly indicating some self-correcting developmental mechanism. |
 | | Furthermore, no difference was found in variation rates between stressed and unstressed polyps, indicating that environmental factors may not play an important role in symmetry determination in these animals. |
| maillists.uci.edu /mailman/public/cnidaria/2004-May/000780.html (357 words) |