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Coordinated Eukaryotic Gene Regulation
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AP Biology
APB.325 Coordinated Eukaryotic Gene Regulation
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A eukaryotic genetics question compares two possibilities: three genes are in a prokaryote-like operon, or three separate genes share a transcription factor. Which expression pattern best supports the eukaryotic shared-transcription-factor model?
A
The genes are translated from one polycistronic mRNA, which is the usual pattern for eukaryotic nuclear genes.
B
The genes are at separate loci but contain similar enhancer response elements and turn on together when the factor is active.
C
The genes are at separate loci and respond to three different cell signals.
D
The genes are adjacent but one is high in muscle, one in liver, and one in neurons.
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