Eutely

Cell or nuclear constancy; the adult has the same number of nuclei or cells as the first-stage juvenile; eutely may exist in tissues, organs or entire animals.

Eutely

Eutelic organisms have a fixed number of somatic cells when they reach maturity, the exact number being constant for any one species. Development proceeds by cell division until maturity; further growth occurs via cell enlargement only. Most eutelic organisms are microscopic: examples include the rotifers, nematodes, tardigrades and dicyemida. ......
Found on http://en.wikipedia.org/wiki/Eutely
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