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【单选题】
Which of the following statements regarding the Drosophila Bar phenotype is NOT true?A.
Unequal crossing over event may give a rise to the duplication of the Bar region.
B.
The trait is inherited as a complete dominant where both homozygous and heterozygous show similar phenotype.
C.
The more Bar segment copy the fly has, the more reduced the facets in the eyes get.
D.
The Bar phenotype reflects the genetic phenomenon called gene dosage effect.
E.
The balance of gene product is critical to cell function and normal development.
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