EDWARD KINSMAN / SCIENCE PHOTO LIBRARY EDWARD KINSMAN / SCIENCE PHOTO LIBRARY
SEM of a mutant fruit fly. Scanning Electron Micrograph (SEM) of the head of a mutant fruit fly (Drosophila melanogaster). This mutant has abnormal bar shaped eyes; they are smaller than normal and are due to the bar mutation. Fruit flies are widely used in genetic experiments, particularly in mutation experiments, because they reproduce rapidly and their genetic systems are well understood.
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