Scientists have defined the function of a one-celled paramecium with almost as many genes as humans. The genetic abundance enables the organism to change form and function of structures within the cell and it also is duonucleonic (e.g., it has 2 nuclei). When a nutrient is detected the paramecium builds a structure to aborb it and turn it into cellular biomass quickly. Depending on environment, the organism can change appearance and form, adapting - therefore it is a metamorph.
more at Ciliate.org
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