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The Bar eye mutation is a genetic alteration found in Drosophila melanogaster (fruit flies) that affects the shape and size of the eye. Typically, it causes the fly's eyes to appear narrower and more elongated, resembling a bar shape rather than the usual round form. This mutation is caused by a change in the dosage of the gene responsible for eye development, specifically affecting the expression of the eyeless gene. Bar eye mutations serve as a classic example in genetics, illustrating principles of inheritance and gene function.

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3w ago

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