Teri Hatcher is an American actress who portrayed Sidra Holland on Seinfeld; she appeared in The Implant, The Pilot and The Finale.
The fruit fly Drosophila melanogaster has been extensively studied for over a century as a model organism for genetic investigations. It also has many characteristics which make it an ideal organism for the study of animal development and behavior, neurobiology, and human genetic diseases and conditions.
An organism is classified as unicellular when it is composed of  only one cell. the cell itself does not differentiate. it can only  reproduce via mitosis. The organism does â¦ not have organ systems.  Examples of these organisms are amoeba, bacteria, stentor,  paramecium, euglena, and most protists.